C\u00f3 \u0111\u01b0\u1ee3c x\u00e9t tuy\u1ec3n nguy\u1ec7n v\u1ecdng b\u1ed5 sung khi \u0111\u00e3 tr\u00fang tuy\u1ec3n \u0111\u1ee3t 1?<\/a><\/blockquote><\/iframe>