Perhaps you should try some spelling variations:
thanh trung » thanh tung
tieu sach » chieu sach, dien sach, te sach
thanh cap » thanh lap, hanh cap, than cap
thanh hai » thanh phan, thanh hoa, thanh san
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
cong ban » cong bang, cong san, cong tan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu sach - thanh trung ((cua dung) or (cua dong)) cong ban ((thanh cap) or (thanh hai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu sach - thanh trung ((cua dung) OR (cua dong)) cong ban ((thanh cap) OR (thanh hai)).
• Adding a wildcard symbol may retrieve word variants: theo tieu sach - thanh trung ((cua dung) or (cua dong)) cong ban ((thanh cap) or (thanh hai))*.