Perhaps you should try some spelling variations:
thanh cac » hanh cac, thanh bac, thanh ca
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
cong tac » cong ty
than cao » toan cao, thai cao, than cap
cong va » dong va, cong ha, luong va
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - thanh cong va dang ((cong san) or (cong tac)) ((than cao) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh cong va dang ((cong san) OR (cong tac)) ((than cao) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh cong va dang ((cong san) or (cong tac)) ((than cao) or (thanh cac))*.