\u0110\u1ed9c th\u1ee7 \u0111\u1ec1 l\u00e0 con s\u1ed1 m\u01a1 \u01b0\u1edbc c\u1ee7a nhi\u1ec1u ng\u01b0\u1eddi mu\u1ed1n \u0111\u1ed5i \u0111\u1eddi. Ti\u1ec1n \u0111anh th\u1ea5p m\u00e0 l\u00e3i thu v\u1ec1 l\u1edbn khi\u1ebfn nhi\u1ec1u ng\u01b0\u1eddi ch\u01a1i l\u00f4 \u0111\u1ec1 c\u1ef1c k\u1ef3 y\u00eau th\u00edch. V\u1eady anh em \u0111\u00e3 bi\u1ebft v\u1ec1 b\u1ea1ch th\u1ee7 \u0111\u1ec1 v\u00e0 c\u00e1ch ch\u01a1i c\u1ee7a n\u00f3 ra sao kh\u00f4ng? Ch\u00fang t\u00f4i xin g\u1eedi \u0111\u1ebfn anh em nh\u1eefng th\u00f4ng tin v\u00e0 c\u00e1ch soi c\u1ea7u \u0111\u1ec1 b\u1ea1ch th\u1ee7 duy nh\u1ea5t 1 con d\u00e0nh cho ng\u01b0\u1eddi m\u1edbi \u0111\u01a1n gi\u1ea3n, hi\u1ec7u qu\u1ea3. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u ngay d\u01b0\u1edbi b\u00e0i bi\u1ebft sau \u0111\u00e2y.<\/i><\/p>\n <\/p>\n N\u1ed9i dung ch\u00ednh <\/p>\n<\/div>\n B\u1ea1ch th\u1ee7 l\u00f4 \u0111\u1ec1 hay c\u00f2n g\u1ecdi \u0111\u1ed9c th\u1ee7 l\u00f4 \u0111\u1ec1 l\u00e0 t\u1eeb s\u1eed d\u1ee5ng trong v\u0103n n\u00f3i, d\u00f9ng cho l\u0129nh v\u1ef1c x\u1ed5 s\u1ed1, l\u00f4 \u0111\u1ec1. Kh\u00e1i ni\u1ec7m n\u00e0y \u0111\u01b0\u1ee3c xu\u1ea5t hi\u1ec7n n\u0103m 1962, khi c\u00f4ng ty ki\u1ebfn thi\u1ebft Th\u1ee7 \u0110\u00f4 th\u00e0nh l\u1eadp t\u1ea1i mi\u1ec1n B\u1eafc. B\u1ea1ch th\u1ee7 tr\u1edf th\u00e0nh t\u1eeb \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i tr\u00ean to\u00e0n qu\u1ed1c.<\/p>\nB\u1ea1ch th\u1ee7 l\u00f4 \u0111\u1ec1 l\u00e0 g\u00ec?<\/b><\/span><\/h2>\n