van-mau-em-hay-giai-thich-cau-tuc-ngu-khong-thay-do-may-lam-nen

van mau em hay giai thich cau tuc ngu khong thay do may lam nen 1 - van-mau-em-hay-giai-thich-cau-tuc-ngu-khong-thay-do-may-lam-nen