{"id":623658,"date":"2026-11-13T09:56:55","date_gmt":"2026-11-13T02:56:55","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=623658"},"modified":"2026-11-13T09:56:55","modified_gmt":"2026-11-13T02:56:55","slug":"luan-de-la-gi","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/luan-de-la-gi\/","title":{"rendered":"Lu\u1eadn \u0111\u1ec1 l\u00e0 g\u00ec? C\u00e1ch x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1 trong v\u0103n ngh\u1ecb lu\u1eadn"},"content":{"rendered":"<p><strong>Lu\u1eadn \u0111\u1ec1 l\u00e0 v\u1ea5n \u0111\u1ec1 ch\u00ednh, t\u01b0 t\u01b0\u1edfng bao tr\u00f9m \u0111\u01b0\u1ee3c b\u00e0n lu\u1eadn trong m\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1, b\u1ea1n \u0111\u1ecdc nhan \u0111\u1ec1, ph\u1ea7n m\u1edf \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac, sau \u0111\u00f3 xem c\u00e1c lu\u1eadn \u0111i\u1ec3m trong b\u00e0i c\u00f9ng h\u01b0\u1edbng t\u1edbi l\u00e0m s\u00e1ng t\u1ecf v\u1ea5n \u0111\u1ec1 g\u00ec; c\u00e2u tr\u1ea3 l\u1eddi cho c\u00e2u h\u1ecfi &#8220;V\u0103n b\u1ea3n n\u00e0y b\u00e0n v\u1ec1 \u0111i\u1ec1u g\u00ec?&#8221; ch\u00ednh l\u00e0 lu\u1eadn \u0111\u1ec1.<\/strong> N\u00f3i ng\u1eafn g\u1ecdn, lu\u1eadn \u0111\u1ec1 l\u00e0 &#8220;c\u00e2u h\u1ecfi l\u1edbn&#8221; c\u1ee7a b\u00e0i, c\u00f2n lu\u1eadn \u0111i\u1ec3m, l\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng l\u00e0 nh\u1eefng g\u00ec ng\u01b0\u1eddi vi\u1ebft d\u00f9ng \u0111\u1ec3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi \u0111\u00f3.<\/p>\n<p><strong>T\u00f3m t\u1eaft nhanh:<\/strong><\/p>\n<ul>\n<li><strong>Lu\u1eadn \u0111\u1ec1:<\/strong> v\u1ea5n \u0111\u1ec1 trung t\u00e2m c\u1ee7a c\u1ea3 b\u00e0i ngh\u1ecb lu\u1eadn, th\u01b0\u1eddng ch\u1ec9 c\u00f3 m\u1ed9t.<\/li>\n<li><strong>Lu\u1eadn \u0111i\u1ec3m:<\/strong> c\u00e1c \u00fd ki\u1ebfn c\u1ee5 th\u1ec3 tri\u1ec3n khai lu\u1eadn \u0111\u1ec1, m\u1ed7i lu\u1eadn \u0111i\u1ec3m th\u01b0\u1eddng l\u00e0 m\u1ed9t \u0111o\u1ea1n.<\/li>\n<li><strong>L\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng:<\/strong> l\u00ed gi\u1ea3i v\u00e0 d\u1eabn ch\u1ee9ng \u0111\u1ec3 l\u00e0m s\u00e1ng t\u1ecf lu\u1eadn \u0111i\u1ec3m.<\/li>\n<li><strong>C\u00e1ch t\u00ecm nhanh:<\/strong> nhan \u0111\u1ec1 \u2192 m\u1edf b\u00e0i \u2192 k\u1ebft b\u00e0i \u2192 x\u00e2u chu\u1ed7i c\u00e1c lu\u1eadn \u0111i\u1ec3m.<\/li>\n<\/ul>\n<h2>Lu\u1eadn \u0111\u1ec1 l\u00e0 g\u00ec?<\/h2>\n<p>Lu\u1eadn \u0111\u1ec1 l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c \u0111\u01b0a ra \u0111\u1ec3 b\u00e0n lu\u1eadn trong v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn. \u0110\u00f3 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t t\u01b0 t\u01b0\u1edfng, m\u1ed9t quan \u0111i\u1ec3m, m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng \u0111\u1eddi s\u1ed1ng hay m\u1ed9t v\u1ea5n \u0111\u1ec1 v\u0103n h\u1ecdc m\u00e0 ng\u01b0\u1eddi vi\u1ebft mu\u1ed1n l\u00e0m r\u00f5 v\u00e0 thuy\u1ebft ph\u1ee5c ng\u01b0\u1eddi \u0111\u1ecdc.<\/p>\n<p>Theo ph\u1ea7n Tri th\u1ee9c ng\u1eef v\u0103n trong SGK Ng\u1eef v\u0103n 8 (b\u1ed9 K\u1ebft n\u1ed1i tri th\u1ee9c v\u1edbi cu\u1ed9c s\u1ed1ng, t\u1eadp 1), lu\u1eadn \u0111\u1ec1 l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c b\u00e0n lu\u1eadn trong v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn, c\u00f3 t\u00ednh ch\u1ea5t bao tr\u00f9m, xuy\u00ean su\u1ed1t v\u0103n b\u1ea3n. M\u1ed7i v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn th\u01b0\u1eddng ch\u1ec9 c\u00f3 m\u1ed9t lu\u1eadn \u0111\u1ec1; lu\u1eadn \u0111\u1ec1 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c n\u00eau r\u00f5 \u1edf nhan \u0111\u1ec1, \u1edf m\u1ed9t s\u1ed1 c\u00e2u ho\u1eb7c \u0111\u01b0\u1ee3c kh\u00e1i qu\u00e1t t\u1eeb to\u00e0n b\u1ed9 n\u1ed9i dung v\u0103n b\u1ea3n. V\u1edbi v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn x\u00e3 h\u1ed9i, lu\u1eadn \u0111\u1ec1 l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng hay v\u1ea5n \u0111\u1ec1 c\u1ee7a \u0111\u1eddi s\u1ed1ng \u0111\u01b0\u1ee3c n\u00eau ra \u0111\u1ec3 b\u00e0n lu\u1eadn.<\/p>\n<p>Trong ch\u01b0\u01a1ng tr\u00ecnh Ng\u1eef v\u0103n 2018, lu\u1eadn \u0111\u1ec1 \u0111\u01b0\u1ee3c h\u1ecdc c\u00f9ng h\u1ec7 th\u1ed1ng lu\u1eadn \u0111i\u1ec3m, l\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng. N\u1eafm \u0111\u01b0\u1ee3c lu\u1eadn \u0111\u1ec1 l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 \u0111\u1ecdc hi\u1ec3u \u0111\u00fang m\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn v\u00e0 c\u0169ng l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 t\u1ef1 vi\u1ebft b\u00e0i ngh\u1ecb lu\u1eadn x\u00e3 h\u1ed9i ch\u1eb7t ch\u1ebd.<\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter size-full wp-image-623667\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-2.jpg\" alt=\"cach-xac-dinh-luan-de-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Ph\u00e2n bi\u1ec7t lu\u1eadn \u0111\u1ec1, lu\u1eadn \u0111i\u1ec3m, l\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng<\/h2>\n<p>B\u1ed1n y\u1ebfu t\u1ed1 n\u00e0y t\u1ea1o th\u00e0nh h\u1ec7 th\u1ed1ng l\u1eadp lu\u1eadn c\u1ee7a m\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn, s\u1eafp x\u1ebfp t\u1eeb kh\u00e1i qu\u00e1t \u0111\u1ebfn c\u1ee5 th\u1ec3.<\/p>\n<table>\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>L\u00e0 g\u00ec<\/th>\n<th>V\u1ecb tr\u00ed th\u01b0\u1eddng g\u1eb7p<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Lu\u1eadn \u0111\u1ec1<\/td>\n<td>V\u1ea5n \u0111\u1ec1 trung t\u00e2m, bao tr\u00f9m to\u00e0n b\u00e0i<\/td>\n<td>Nhan \u0111\u1ec1, m\u1edf b\u00e0i, k\u1ebft b\u00e0i<\/td>\n<\/tr>\n<tr>\n<td>Lu\u1eadn \u0111i\u1ec3m<\/td>\n<td>\u00dd ki\u1ebfn c\u1ee5 th\u1ec3 tri\u1ec3n khai t\u1eebng kh\u00eda c\u1ea1nh c\u1ee7a lu\u1eadn \u0111\u1ec1<\/td>\n<td>C\u00e2u ch\u1ee7 \u0111\u1ec1 c\u1ee7a m\u1ed7i \u0111o\u1ea1n th\u00e2n b\u00e0i<\/td>\n<\/tr>\n<tr>\n<td>L\u00ed l\u1ebd<\/td>\n<td>Nh\u1eefng l\u1eddi gi\u1ea3i th\u00edch, ph\u00e2n t\u00edch \u0111\u1ec3 l\u00e0m r\u00f5 lu\u1eadn \u0111i\u1ec3m<\/td>\n<td>Sau c\u00e2u ch\u1ee7 \u0111\u1ec1<\/td>\n<\/tr>\n<tr>\n<td>B\u1eb1ng ch\u1ee9ng<\/td>\n<td>S\u1ed1 li\u1ec7u, s\u1ef1 vi\u1ec7c, nh\u00e2n v\u1eadt, c\u00e2u tr\u00edch d\u1eabn c\u1ee5 th\u1ec3<\/td>\n<td>\u0110i k\u00e8m l\u00ed l\u1ebd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>C\u00f3 th\u1ec3 h\u00ecnh dung lu\u1eadn \u0111\u1ec1 l\u00e0 &#8220;c\u00e2u h\u1ecfi l\u1edbn&#8221; c\u1ee7a b\u00e0i, c\u00f2n lu\u1eadn \u0111i\u1ec3m l\u00e0 c\u00e1c &#8220;c\u00e2u tr\u1ea3 l\u1eddi nh\u1ecf&#8221; gi\u00fap gi\u1ea3i quy\u1ebft c\u00e2u h\u1ecfi l\u1edbn \u0111\u00f3. Theo SGK, m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa b\u1ed1n y\u1ebfu t\u1ed1 n\u00e0y c\u00f3 t\u00ednh t\u1ea7ng b\u1eadc: v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn tr\u01b0\u1edbc h\u1ebft ph\u1ea3i c\u00f3 m\u1ed9t lu\u1eadn \u0111\u1ec1; t\u1eeb lu\u1eadn \u0111\u1ec1, ng\u01b0\u1eddi vi\u1ebft tri\u1ec3n khai th\u00e0nh c\u00e1c lu\u1eadn \u0111i\u1ec3m; m\u1ed7i lu\u1eadn \u0111i\u1ec3m \u0111\u01b0\u1ee3c l\u00e0m r\u00f5 b\u1eb1ng l\u00ed l\u1ebd, v\u00e0 m\u1ed7i l\u00ed l\u1ebd c\u1ea7n \u0111\u01b0\u1ee3c ch\u1ee9ng minh b\u1eb1ng b\u1eb1ng ch\u1ee9ng c\u1ee5 th\u1ec3. Trong ch\u01b0\u01a1ng tr\u00ecnh Ng\u1eef v\u0103n c\u0169, l\u00ed l\u1ebd v\u00e0 d\u1eabn ch\u1ee9ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi chung l\u00e0 lu\u1eadn c\u1ee9, n\u00ean b\u1ea1n v\u1eabn c\u00f3 th\u1ec3 g\u1eb7p thu\u1eadt ng\u1eef n\u00e0y trong t\u00e0i li\u1ec7u tham kh\u1ea3o.<\/p>\n<h2>4 b\u01b0\u1edbc x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1 trong v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn<\/h2>\n<ol>\n<li><strong>\u0110\u1ecdc nhan \u0111\u1ec1:<\/strong> nhi\u1ec1u v\u0103n b\u1ea3n n\u00eau th\u1eb3ng lu\u1eadn \u0111\u1ec1 ngay \u1edf nhan \u0111\u1ec1, v\u00ed d\u1ee5 v\u0103n b\u1ea3n &#8220;B\u00e0n v\u1ec1 \u0111\u1ecdc s\u00e1ch&#8221; c\u1ee7a Chu Quang Ti\u1ec1m cho th\u1ea5y ngay v\u1ea5n \u0111\u1ec1 \u0111\u01b0\u1ee3c b\u00e0n l\u00e0 \u00fd ngh\u0129a c\u1ee7a vi\u1ec7c \u0111\u1ecdc s\u00e1ch v\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecdc s\u00e1ch.<\/li>\n<li><strong>\u0110\u1ecdc ph\u1ea7n m\u1edf \u0111\u1ea7u:<\/strong> t\u00ecm c\u00e2u n\u00eau v\u1ea5n \u0111\u1ec1, th\u01b0\u1eddng c\u00f3 c\u00e1c c\u1ee5m nh\u01b0 &#8220;v\u1ea5n \u0111\u1ec1 \u0111\u1eb7t ra l\u00e0&#8221;, &#8220;\u0111i\u1ec1u \u0111\u00e1ng b\u00e0n l\u00e0&#8221;, &#8220;ch\u00fang ta c\u1ea7n&#8221;.<\/li>\n<li><strong>\u0110\u1ecdc ph\u1ea7n k\u1ebft th\u00fac:<\/strong> c\u00e2u kh\u1eb3ng \u0111\u1ecbnh, t\u1ed5ng k\u1ebft \u1edf cu\u1ed1i b\u00e0i th\u01b0\u1eddng nh\u1eafc l\u1ea1i lu\u1eadn \u0111\u1ec1 d\u01b0\u1edbi d\u1ea1ng kh\u00e1i qu\u00e1t.<\/li>\n<li><strong>X\u00e2u chu\u1ed7i c\u00e1c lu\u1eadn \u0111i\u1ec3m:<\/strong> t\u00ecm c\u00e2u ch\u1ee7 \u0111\u1ec1 c\u1ee7a t\u1eebng \u0111o\u1ea1n v\u00e0 t\u1ef1 h\u1ecfi &#8220;c\u00e1c \u00fd n\u00e0y c\u00f9ng l\u00e0m s\u00e1ng t\u1ecf \u0111i\u1ec1u g\u00ec?&#8221;. \u0110i\u1ec3m chung \u0111\u00f3 ch\u00ednh l\u00e0 lu\u1eadn \u0111\u1ec1.<\/li>\n<\/ol>\n<p>Khi lu\u1eadn \u0111\u1ec1 kh\u00f4ng \u0111\u01b0\u1ee3c n\u00eau tr\u1ef1c ti\u1ebfp, b\u01b0\u1edbc 4 l\u00e0 b\u01b0\u1edbc quan tr\u1ecdng nh\u1ea5t. H\u00e3y di\u1ec5n \u0111\u1ea1t lu\u1eadn \u0111\u1ec1 th\u00e0nh m\u1ed9t c\u00e2u ho\u1eb7c m\u1ed9t c\u1ee5m t\u1eeb ng\u1eafn g\u1ecdn, bao qu\u00e1t \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 lu\u1eadn \u0111i\u1ec3m.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-623668\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-1.jpg\" alt=\"cach-xac-dinh-luan-de-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>V\u00ed d\u1ee5 x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1<\/h2>\n<h3>V\u00ed d\u1ee5 1: V\u0103n b\u1ea3n b\u00e0n v\u1ec1 t\u00e1c h\u1ea1i c\u1ee7a m\u1ea1ng x\u00e3 h\u1ed9i<\/h3>\n<p>Gi\u1ea3 s\u1eed m\u1ed9t v\u0103n b\u1ea3n c\u00f3 c\u00e1c \u0111o\u1ea1n sau:<\/p>\n<ul>\n<li>\u0110o\u1ea1n 1: M\u1ea1ng x\u00e3 h\u1ed9i khi\u1ebfn nhi\u1ec1u b\u1ea1n tr\u1ebb d\u00e0nh qu\u00e1 nhi\u1ec1u th\u1eddi gian l\u01b0\u1edbt \u0111i\u1ec7n tho\u1ea1i.<\/li>\n<li>\u0110o\u1ea1n 2: Th\u00f4ng tin sai l\u1ec7ch lan truy\u1ec1n nhanh tr\u00ean m\u1ea1ng x\u00e3 h\u1ed9i.<\/li>\n<li>\u0110o\u1ea1n 3: Vi\u1ec7c so s\u00e1nh b\u1ea3n th\u00e2n v\u1edbi ng\u01b0\u1eddi kh\u00e1c tr\u00ean m\u1ea1ng d\u1ec5 g\u00e2y \u00e1p l\u1ef1c t\u00e2m l\u00ed.<\/li>\n<li>K\u1ebft b\u00e0i: C\u1ea7n s\u1eed d\u1ee5ng m\u1ea1ng x\u00e3 h\u1ed9i c\u00f3 ch\u1eebng m\u1ef1c v\u00e0 t\u1ec9nh t\u00e1o.<\/li>\n<\/ul>\n<p>C\u00e1c lu\u1eadn \u0111i\u1ec3m \u0111\u1ec1u n\u00f3i v\u1ec1 m\u1eb7t ti\u00eau c\u1ef1c v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng h\u1ee3p l\u00ed, n\u00ean <strong>lu\u1eadn \u0111\u1ec1<\/strong> l\u00e0: &#8220;T\u00e1c h\u1ea1i c\u1ee7a m\u1ea1ng x\u00e3 h\u1ed9i \u0111\u1ed1i v\u1edbi ng\u01b0\u1eddi tr\u1ebb v\u00e0 c\u00e1ch s\u1eed d\u1ee5ng h\u1ee3p l\u00ed&#8221;.<\/p>\n<h3>V\u00ed d\u1ee5 2: V\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn v\u0103n h\u1ecdc<\/h3>\n<p>M\u1ed9t b\u00e0i vi\u1ebft ph\u00e2n t\u00edch h\u00ecnh \u1ea3nh ng\u01b0\u1eddi ph\u1ee5 n\u1eef trong b\u00e0i th\u01a1 &#8220;B\u00e1nh tr\u00f4i n\u01b0\u1edbc&#8221; c\u1ee7a H\u1ed3 Xu\u00e2n H\u01b0\u01a1ng, v\u1edbi c\u00e1c lu\u1eadn \u0111i\u1ec3m v\u1ec1 v\u1ebb \u0111\u1eb9p h\u00ecnh th\u1ec3, th\u00e2n ph\u1eadn ch\u00ecm n\u1ed5i v\u00e0 t\u1ea5m l\u00f2ng son s\u1eaft. Lu\u1eadn \u0111\u1ec1 l\u00e0: &#8220;V\u1ebb \u0111\u1eb9p v\u00e0 th\u00e2n ph\u1eadn ng\u01b0\u1eddi ph\u1ee5 n\u1eef trong b\u00e0i th\u01a1 B\u00e1nh tr\u00f4i n\u01b0\u1edbc&#8221;. \u0110\u1ec3 ph\u00e2n t\u00edch s\u00e2u h\u01a1n, b\u1ea1n n\u00ean n\u1eafm th\u00eam v\u1ec1 <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/an-du-la-gi\/\">bi\u1ec7n ph\u00e1p \u1ea9n d\u1ee5<\/a> m\u00e0 t\u00e1c gi\u1ea3 s\u1eed d\u1ee5ng (h\u00ecnh \u1ea3nh chi\u1ebfc b\u00e1nh tr\u00f4i g\u1ee3i th\u00e2n ph\u1eadn ng\u01b0\u1eddi ph\u1ee5 n\u1eef).<\/p>\n<h3>V\u00ed d\u1ee5 3: &#8220;Tinh th\u1ea7n y\u00eau n\u01b0\u1edbc c\u1ee7a nh\u00e2n d\u00e2n ta&#8221; (H\u1ed3 Ch\u00ed Minh)<\/h3>\n<p>V\u0103n b\u1ea3n tr\u00edch t\u1eeb B\u00e1o c\u00e1o Ch\u00ednh tr\u1ecb c\u1ee7a Ch\u1ee7 t\u1ecbch H\u1ed3 Ch\u00ed Minh t\u1ea1i \u0110\u1ea1i h\u1ed9i \u0111\u1ea1i bi\u1ec3u to\u00e0n qu\u1ed1c l\u1ea7n th\u1ee9 II c\u1ee7a \u0110\u1ea3ng (n\u0103m 1951). \u0110\u00e2y l\u00e0 v\u00ed d\u1ee5 lu\u1eadn \u0111\u1ec1 \u0111\u01b0\u1ee3c n\u00eau tr\u1ef1c ti\u1ebfp \u1edf c\u1ea3 nhan \u0111\u1ec1 l\u1eabn c\u00e2u m\u1edf \u0111\u1ea7u: &#8220;D\u00e2n ta c\u00f3 m\u1ed9t l\u00f2ng n\u1ed3ng n\u00e0n y\u00eau n\u01b0\u1edbc. \u0110\u00f3 l\u00e0 m\u1ed9t truy\u1ec1n th\u1ed1ng qu\u00fd b\u00e1u c\u1ee7a ta.&#8221;<\/p>\n<table>\n<thead>\n<tr>\n<th>Y\u1ebfu t\u1ed1<\/th>\n<th>N\u1ed9i dung trong v\u0103n b\u1ea3n<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Lu\u1eadn \u0111\u1ec1<\/td>\n<td>Tinh th\u1ea7n y\u00eau n\u01b0\u1edbc l\u00e0 truy\u1ec1n th\u1ed1ng qu\u00fd b\u00e1u c\u1ee7a nh\u00e2n d\u00e2n ta<\/td>\n<\/tr>\n<tr>\n<td>Lu\u1eadn \u0111i\u1ec3m 1<\/td>\n<td>Tinh th\u1ea7n y\u00eau n\u01b0\u1edbc th\u1ec3 hi\u1ec7n qua c\u00e1c cu\u1ed9c \u0111\u1ea5u tranh trong l\u1ecbch s\u1eed<\/td>\n<\/tr>\n<tr>\n<td>Lu\u1eadn \u0111i\u1ec3m 2<\/td>\n<td>Tinh th\u1ea7n y\u00eau n\u01b0\u1edbc th\u1ec3 hi\u1ec7n trong cu\u1ed9c kh\u00e1ng chi\u1ebfn ch\u1ed1ng th\u1ef1c d\u00e2n Ph\u00e1p l\u00fac b\u1ea5y gi\u1edd<\/td>\n<\/tr>\n<tr>\n<td>Lu\u1eadn \u0111i\u1ec3m 3<\/td>\n<td>B\u1ed5n ph\u1eadn c\u1ee7a ch\u00fang ta l\u00e0 l\u00e0m cho tinh th\u1ea7n y\u00eau n\u01b0\u1edbc \u0111\u01b0\u1ee3c ph\u00e1t huy, bi\u1ebfn th\u00e0nh h\u00e0nh \u0111\u1ed9ng<\/td>\n<\/tr>\n<tr>\n<td>B\u1eb1ng ch\u1ee9ng ti\u00eau bi\u1ec3u<\/td>\n<td>C\u00e1c v\u1ecb anh h\u00f9ng B\u00e0 Tr\u01b0ng, B\u00e0 Tri\u1ec7u, Tr\u1ea7n H\u01b0ng \u0110\u1ea1o, L\u00ea L\u1ee3i, Quang Trung; h\u00ecnh \u1ea3nh c\u00e1c t\u1ea7ng l\u1edbp nh\u00e2n d\u00e2n c\u00f9ng tham gia kh\u00e1ng chi\u1ebfn<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>V\u00ed d\u1ee5 n\u00e0y cho th\u1ea5y r\u00f5 c\u1ea5u tr\u00fac t\u1ea7ng b\u1eadc: m\u1ed9t lu\u1eadn \u0111\u1ec1 bao tr\u00f9m, ba lu\u1eadn \u0111i\u1ec3m tri\u1ec3n khai v\u00e0 h\u1ec7 th\u1ed1ng b\u1eb1ng ch\u1ee9ng c\u1ee5 th\u1ec3 t\u1eeb l\u1ecbch s\u1eed \u0111\u1ebfn \u0111\u1eddi s\u1ed1ng.<\/p>\n<p><img decoding=\"async\" class=\"aligncenter size-full wp-image-623669\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-3.jpg\" alt=\"cach-xac-dinh-luan-de-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>Lu\u1eadn \u0111\u1ec1 c\u00f3 ph\u1ea3i l\u00e0 ch\u1ee7 \u0111\u1ec1 kh\u00f4ng?<\/h2>\n<p>Hai kh\u00e1i ni\u1ec7m g\u1ea7n nhau nh\u01b0ng kh\u00f4ng ho\u00e0n to\u00e0n gi\u1ed1ng.<\/p>\n<ul>\n<li><strong>Ch\u1ee7 \u0111\u1ec1<\/strong> l\u00e0 v\u1ea5n \u0111\u1ec1 ch\u00ednh m\u00e0 v\u0103n b\u1ea3n \u0111\u1ec1 c\u1eadp, d\u00f9ng cho m\u1ecdi lo\u1ea1i v\u0103n b\u1ea3n (truy\u1ec7n, th\u01a1, ngh\u1ecb lu\u1eadn\u2026).<\/li>\n<li><strong>Lu\u1eadn \u0111\u1ec1<\/strong> l\u00e0 kh\u00e1i ni\u1ec7m ri\u00eang c\u1ee7a v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn, th\u01b0\u1eddng th\u1ec3 hi\u1ec7n c\u1ea3 quan \u0111i\u1ec3m c\u1ee7a ng\u01b0\u1eddi vi\u1ebft \u0111\u1ed1i v\u1edbi v\u1ea5n \u0111\u1ec1, v\u00ed d\u1ee5 kh\u00f4ng ch\u1ec9 &#8220;m\u1ea1ng x\u00e3 h\u1ed9i&#8221; m\u00e0 l\u00e0 &#8220;m\u1ea1ng x\u00e3 h\u1ed9i c\u00f3 nhi\u1ec1u t\u00e1c h\u1ea1i n\u1ebfu d\u00f9ng thi\u1ebfu ki\u1ec3m so\u00e1t&#8221;.<\/li>\n<\/ul>\n<p>V\u00ec v\u1eady, khi tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi \u0111\u1ecdc hi\u1ec3u v\u1ec1 lu\u1eadn \u0111\u1ec1, b\u1ea1n n\u00ean n\u00eau c\u1ea3 v\u1ea5n \u0111\u1ec1 v\u00e0 th\u00e1i \u0111\u1ed9, quan \u0111i\u1ec3m c\u1ee7a t\u00e1c gi\u1ea3 n\u1ebfu v\u0103n b\u1ea3n th\u1ec3 hi\u1ec7n r\u00f5.<\/p>\n<h2>L\u1ed7i th\u01b0\u1eddng g\u1eb7p khi x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1<\/h2>\n<ul>\n<li><strong>Nh\u1ea7m lu\u1eadn \u0111\u1ec1 v\u1edbi m\u1ed9t lu\u1eadn \u0111i\u1ec3m:<\/strong> ch\u1ec9 ch\u1ecdn \u00fd c\u1ee7a m\u1ed9t \u0111o\u1ea1n m\u00e0 kh\u00f4ng bao qu\u00e1t to\u00e0n b\u00e0i.<\/li>\n<li><strong>Di\u1ec5n \u0111\u1ea1t qu\u00e1 r\u1ed9ng:<\/strong> ghi &#8220;b\u00e0n v\u1ec1 cu\u1ed9c s\u1ed1ng&#8221; thay v\u00ec v\u1ea5n \u0111\u1ec1 c\u1ee5 th\u1ec3 m\u00e0 v\u0103n b\u1ea3n t\u1eadp trung.<\/li>\n<li><strong>Ch\u00e9p nguy\u00ean m\u1ed9t c\u00e2u d\u00e0i:<\/strong> n\u00ean r\u00fat g\u1ecdn th\u00e0nh m\u1ed9t c\u00e2u ho\u1eb7c c\u1ee5m t\u1eeb s\u00fac t\u00edch.<\/li>\n<li><strong>B\u1ecf qua quan \u0111i\u1ec3m c\u1ee7a t\u00e1c gi\u1ea3:<\/strong> lu\u1eadn \u0111\u1ec1 th\u01b0\u1eddng k\u00e8m th\u00e1i \u0111\u1ed9 \u0111\u1ed3ng t\u00ecnh, ph\u1ea3n \u0111\u1ed1i ho\u1eb7c \u0111\u1ec1 xu\u1ea5t.<\/li>\n<\/ul>\n<p>Khi t\u1ef1 vi\u1ebft b\u00e0i, h\u00e3y x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1 tr\u01b0\u1edbc r\u1ed3i m\u1edbi tri\u1ec3n khai lu\u1eadn \u0111i\u1ec3m. B\u1ea1n c\u00f3 th\u1ec3 ghi lu\u1eadn \u0111\u1ec1 \u1edf trung t\u00e2m, r\u1ed3i tri\u1ec3n khai c\u00e1c lu\u1eadn \u0111i\u1ec3m xung quanh; v\u1edbi d\u1ea1ng b\u00e0i ph\u00e2n t\u00edch t\u00e1c ph\u1ea9m, tham kh\u1ea3o th\u00eam d\u00e0n \u00fd chung c\u1ee7a b\u00e0i <a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/nghi-luan-van-hoc\/\">ngh\u1ecb lu\u1eadn v\u0103n h\u1ecdc<\/a>.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-623670\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-4.jpg\" alt=\"cach-xac-dinh-luan-de-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2026\/11\/cach-xac-dinh-luan-de-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2>B\u00e0i t\u1eadp t\u1ef1 luy\u1ec7n x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1<\/h2>\n<p>H\u00e3y \u0111\u1ecdc c\u00e1c nh\u00f3m lu\u1eadn \u0111i\u1ec3m d\u01b0\u1edbi \u0111\u00e2y v\u00e0 t\u1ef1 kh\u00e1i qu\u00e1t lu\u1eadn \u0111\u1ec1 tr\u01b0\u1edbc khi xem g\u1ee3i \u00fd.<\/p>\n<table>\n<thead>\n<tr>\n<th>C\u00e1c lu\u1eadn \u0111i\u1ec3m<\/th>\n<th>G\u1ee3i \u00fd lu\u1eadn \u0111\u1ec1<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u1ecdc s\u00e1ch m\u1edf r\u1ed9ng hi\u1ec3u bi\u1ebft; \u0111\u1ecdc s\u00e1ch r\u00e8n kh\u1ea3 n\u0103ng t\u01b0 duy; c\u1ea7n ch\u1ecdn s\u00e1ch ph\u00f9 h\u1ee3p<\/td>\n<td>L\u1ee3i \u00edch c\u1ee7a vi\u1ec7c \u0111\u1ecdc s\u00e1ch v\u00e0 c\u00e1ch \u0111\u1ecdc hi\u1ec7u qu\u1ea3<\/td>\n<\/tr>\n<tr>\n<td>R\u00e1c th\u1ea3i nh\u1ef1a g\u00e2y \u00f4 nhi\u1ec5m \u0111\u1ea5t, n\u01b0\u1edbc; \u1ea3nh h\u01b0\u1edfng s\u1ee9c kh\u1ecfe; c\u1ea7n h\u1ea1n ch\u1ebf d\u00f9ng t\u00fai nilon<\/td>\n<td>T\u00e1c h\u1ea1i c\u1ee7a r\u00e1c th\u1ea3i nh\u1ef1a v\u00e0 tr\u00e1ch nhi\u1ec7m h\u1ea1n ch\u1ebf s\u1eed d\u1ee5ng<\/td>\n<\/tr>\n<tr>\n<td>T\u1ef1 h\u1ecdc gi\u00fap ch\u1ee7 \u0111\u1ed9ng; t\u1ef1 h\u1ecdc r\u00e8n t\u00ednh k\u1ef7 lu\u1eadt; c\u1ea7n l\u1eadp k\u1ebf ho\u1ea1ch t\u1ef1 h\u1ecdc<\/td>\n<td>Vai tr\u00f2 c\u1ee7a tinh th\u1ea7n t\u1ef1 h\u1ecdc \u0111\u1ed1i v\u1edbi h\u1ecdc sinh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 lu\u1eadn \u0111\u1ec1<\/h2>\n<h3>Lu\u1eadn c\u1ee9 l\u00e0 g\u00ec?<\/h3>\n<p>Lu\u1eadn c\u1ee9 l\u00e0 c\u00e1ch g\u1ecdi trong ch\u01b0\u01a1ng tr\u00ecnh Ng\u1eef v\u0103n c\u0169, ch\u1ec9 chung l\u00ed l\u1ebd v\u00e0 d\u1eabn ch\u1ee9ng d\u00f9ng \u0111\u1ec3 l\u00e0m s\u00e1ng t\u1ecf lu\u1eadn \u0111i\u1ec3m. SGK hi\u1ec7n h\u00e0nh t\u00e1ch th\u00e0nh hai kh\u00e1i ni\u1ec7m l\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng.<\/p>\n<h3>M\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn c\u00f3 m\u1ea5y lu\u1eadn \u0111\u1ec1?<\/h3>\n<p>Th\u00f4ng th\u01b0\u1eddng m\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn ch\u1ec9 c\u00f3 m\u1ed9t lu\u1eadn \u0111\u1ec1, \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng nhi\u1ec1u lu\u1eadn \u0111i\u1ec3m.<\/p>\n<h3>Lu\u1eadn \u0111\u1ec1 th\u01b0\u1eddng n\u1eb1m \u1edf \u0111\u00e2u trong v\u0103n b\u1ea3n?<\/h3>\n<p>Lu\u1eadn \u0111\u1ec1 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n \u1edf nhan \u0111\u1ec1, ph\u1ea7n m\u1edf \u0111\u1ea7u ho\u1eb7c \u0111\u01b0\u1ee3c nh\u1eafc l\u1ea1i \u1edf ph\u1ea7n k\u1ebft th\u00fac. M\u1ed9t s\u1ed1 v\u0103n b\u1ea3n kh\u00f4ng n\u00eau tr\u1ef1c ti\u1ebfp, ng\u01b0\u1eddi \u0111\u1ecdc ph\u1ea3i kh\u00e1i qu\u00e1t t\u1eeb c\u00e1c lu\u1eadn \u0111i\u1ec3m.<\/p>\n<h3>Lu\u1eadn \u0111\u1ec1 kh\u00e1c lu\u1eadn \u0111i\u1ec3m nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>Lu\u1eadn \u0111\u1ec1 l\u00e0 v\u1ea5n \u0111\u1ec1 bao tr\u00f9m to\u00e0n b\u00e0i; lu\u1eadn \u0111i\u1ec3m l\u00e0 c\u00e1c \u00fd ki\u1ebfn c\u1ee5 th\u1ec3 tri\u1ec3n khai t\u1eebng kh\u00eda c\u1ea1nh c\u1ee7a lu\u1eadn \u0111\u1ec1, m\u1ed7i lu\u1eadn \u0111i\u1ec3m th\u01b0\u1eddng l\u00e0 n\u1ed9i dung c\u1ee7a m\u1ed9t \u0111o\u1ea1n v\u0103n.<\/p>\n<h3>L\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng kh\u00e1c nhau th\u1ebf n\u00e0o?<\/h3>\n<p>L\u00ed l\u1ebd l\u00e0 l\u1eddi gi\u1ea3i th\u00edch, ph\u00e2n t\u00edch c\u1ee7a ng\u01b0\u1eddi vi\u1ebft; b\u1eb1ng ch\u1ee9ng l\u00e0 s\u1ef1 vi\u1ec7c, s\u1ed1 li\u1ec7u, nh\u00e2n v\u1eadt ho\u1eb7c c\u00e2u tr\u00edch d\u1eabn c\u1ee5 th\u1ec3 d\u00f9ng \u0111\u1ec3 ch\u1ee9ng minh cho l\u00ed l\u1ebd.<\/p>\n<h3>Lu\u1eadn \u0111\u1ec1 h\u1ecdc \u1edf l\u1edbp m\u1ea5y?<\/h3>\n<p>Theo ch\u01b0\u01a1ng tr\u00ecnh Ng\u1eef v\u0103n 2018, kh\u00e1i ni\u1ec7m lu\u1eadn \u0111\u1ec1 v\u00e0 m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa lu\u1eadn \u0111\u1ec1, lu\u1eadn \u0111i\u1ec3m, l\u00ed l\u1ebd, b\u1eb1ng ch\u1ee9ng \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y trong ph\u1ea7n Tri th\u1ee9c ng\u1eef v\u0103n c\u1ee7a SGK Ng\u1eef v\u0103n 8 (b\u1ed9 K\u1ebft n\u1ed1i tri th\u1ee9c v\u1edbi cu\u1ed9c s\u1ed1ng), sau \u0111\u00f3 ti\u1ebfp t\u1ee5c \u0111\u01b0\u1ee3c v\u1eadn d\u1ee5ng khi \u0111\u1ecdc, vi\u1ebft v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn \u1edf THPT.<\/p>\n<h2>K\u1ebft lu\u1eadn<\/h2>\n<p>Lu\u1eadn \u0111\u1ec1 l\u00e0 v\u1ea5n \u0111\u1ec1 trung t\u00e2m c\u1ee7a v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn, \u0111\u01b0\u1ee3c l\u00e0m s\u00e1ng t\u1ecf qua h\u1ec7 th\u1ed1ng lu\u1eadn \u0111i\u1ec3m, l\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1, h\u00e3y \u0111\u1ecdc nhan \u0111\u1ec1, m\u1edf \u0111\u1ea7u, k\u1ebft th\u00fac v\u00e0 x\u00e2u chu\u1ed7i c\u00e1c lu\u1eadn \u0111i\u1ec3m, r\u1ed3i di\u1ec5n \u0111\u1ea1t th\u00e0nh m\u1ed9t c\u00e2u ng\u1eafn bao qu\u00e1t \u0111\u01b0\u1ee3c to\u00e0n b\u00e0i. N\u1eafm ch\u1eafc c\u00e1ch l\u00e0m n\u00e0y, b\u1ea1n s\u1ebd tr\u1ea3 l\u1eddi ch\u00ednh x\u00e1c c\u00e2u h\u1ecfi \u0111\u1ecdc hi\u1ec3u v\u00e0 vi\u1ebft b\u00e0i ngh\u1ecb lu\u1eadn m\u1ea1ch l\u1ea1c h\u01a1n.<\/p>\n<p>Xem th\u00eam:<br \/>\n<a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/tac-gia-bai-tho-canh-khuya\/\">Ai l\u00e0 t\u00e1c gi\u1ea3 b\u00e0i th\u01a1 C\u1ea3nh khuya? Ho\u00e0n c\u1ea3nh s\u00e1ng t\u00e1c v\u00e0 ph\u00e2n t\u00edch<\/a><\/p>\n<p><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/tho-ve-mua\/\">Nh\u1eefng b\u00e0i th\u01a1 v\u1ec1 m\u01b0a hay nh\u1ea5t<\/a><\/p>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Lu\u1eadn c\u1ee9 l\u00e0 g\u00ec?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lu\u1eadn c\u1ee9 l\u00e0 c\u00e1ch g\u1ecdi trong ch\u01b0\u01a1ng tr\u00ecnh Ng\u1eef v\u0103n c\u0169, ch\u1ec9 chung l\u00ed l\u1ebd v\u00e0 d\u1eabn ch\u1ee9ng d\u00f9ng \u0111\u1ec3 l\u00e0m s\u00e1ng t\u1ecf lu\u1eadn \u0111i\u1ec3m. SGK hi\u1ec7n h\u00e0nh t\u00e1ch th\u00e0nh hai kh\u00e1i ni\u1ec7m l\u00ed l\u1ebd v\u00e0 b\u1eb1ng ch\u1ee9ng.\"}}, {\"@type\": \"Question\", \"name\": \"M\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn c\u00f3 m\u1ea5y lu\u1eadn \u0111\u1ec1?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Th\u00f4ng th\u01b0\u1eddng m\u1ed9t v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn ch\u1ec9 c\u00f3 m\u1ed9t lu\u1eadn \u0111\u1ec1, \u0111\u01b0\u1ee3c tri\u1ec3n khai b\u1eb1ng nhi\u1ec1u lu\u1eadn \u0111i\u1ec3m.\"}}, {\"@type\": \"Question\", \"name\": \"Lu\u1eadn \u0111\u1ec1 th\u01b0\u1eddng n\u1eb1m \u1edf \u0111\u00e2u trong v\u0103n b\u1ea3n?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Lu\u1eadn \u0111\u1ec1 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n \u1edf nhan \u0111\u1ec1, ph\u1ea7n m\u1edf \u0111\u1ea7u ho\u1eb7c \u0111\u01b0\u1ee3c nh\u1eafc l\u1ea1i \u1edf ph\u1ea7n k\u1ebft th\u00fac. 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C\u00e1ch x\u00e1c \u0111\u1ecbnh lu\u1eadn \u0111\u1ec1 trong v\u0103n ngh\u1ecb lu\u1eadn","_yoast_wpseo_metadesc":"Lu\u1eadn \u0111\u1ec1 l\u00e0 g\u00ec? L\u00e0 v\u1ea5n \u0111\u1ec1 bao tr\u00f9m v\u0103n b\u1ea3n ngh\u1ecb lu\u1eadn. C\u00e1ch ph\u00e2n bi\u1ec7t v\u1edbi lu\u1eadn \u0111i\u1ec3m, l\u00ed l\u1ebd, b\u1eb1ng ch\u1ee9ng v\u00e0 4 b\u01b0\u1edbc x\u00e1c \u0111\u1ecbnh. Xem chi ti\u1ebft t\u1ea1i Ho\u00e0ng H\u00e0 Mobile.","footnotes":""},"categories":[3910,30453],"tags":[],"class_list":["post-623658","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kham-pha","category-kien-thuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.4) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Lu\u1eadn \u0111\u1ec1 l\u00e0 g\u00ec? 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