Warning: fread(): Length parameter must be greater than 0 in /home/teachvn/domains/teachvn.com/public_html/system/library/cache/file.php on line 32Warning: fread(): Length parameter must be greater than 0 in /home/teachvn/domains/teachvn.com/public_html/system/library/cache/file.php on line 32 VN đi học: "con ngoan, trò giỏi", đi làm: "lưu manh, láu cá"
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