http://www.webtretho.com/forum/f3268/giam-mun-hieu-qua-don-giam-lam-mn-2146473/
Va con 1 bai nua m khong nho link.
Mong addmin xoa gium minh tat ca bai viet minh da dang len duoc k a?
Thanks b rat nhieu.

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