Perhaps you should try some spelling variations:
thanh tung » thanh cong
hieu sach » chieu sach, hieu cach, dien sach
doc hieu » toc thieu, hoc thieu, hoc hien
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - thanh tung ((cua dung) OR (cua dong)) cong dan than cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - thanh tung ((cua dung) OR (cua dong)) cong dan than cap".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - thanh tung ((cua dung) OR (cua dong)) cong dan than cap*.