Perhaps you should try some spelling variations:
thanh song » thanh cong, thanh son, thanh long
thanh cac » hanh cac, thanh bac, thanh ca
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
song van » hoang van, trong van, duong van
van dang » van dong, van dung, van nang
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cao » toan cao, thai cao, than cap

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 song van dang ((cong tan) or (cong san)) ((than cao) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - thanh song van dang ((cong tan) OR (cong san)) ((than cao) OR (thanh cac)).
• Adding a wildcard symbol may retrieve word variants: theo chu sach - thanh song van dang ((cong tan) or (cong san)) ((than cao) or (thanh cac))*.