Perhaps you should try some spelling variations:
thanh tung » thanh cong
chi sach » chinh sach, chieu sach, co sach
cua hang » cua dang, cua nhung, cua ban
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac
doi chi » doi khi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi sach - thanh tung ((cua hang) OR (cua cong)) cong tan than cap~.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - thanh tung ((cua hang) or (cua cong)) cong tan than cap*.