V\u0103n m\u1eabu t\u1eadp 1: Ph\u00e2n t\u00edch nh\u1eefng m\u00e2u thu\u1eabn trong V\u0129nh bi\u1ec7t c\u1eedu tr\u00f9ng \u0111\u00e0i<\/a><\/blockquote><\/iframe>