Perhaps you should try some spelling variations:
thanh trung » thanh tung
khoe sach » khoa sach, hoc sach, khoe sinh
khau sach » hau sach, khoa sach, pham sach
trung cap » truong cao, trung tam
cap hang » cap hoang, cap bang, cap han
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((khoe sach) or (khau sach)) - thanh trung cap hang ((cong dan) or (cong tan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((khoe sach) OR (khau sach)) - thanh trung cap hang ((cong dan) OR (cong tan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: doi ((khoe sach) or (khau sach)) - thanh trung cap hang ((cong dan) or (cong tan)) toan cao*.