Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chiet tach, chieu sang, chieu xanh
nhung cong » dung cong, thong cong, hang cong
tam nhung » tham nhung, cam nhung, nam nhung
cong tac » cong ty
tran ban » tranh ban, tran van, tran bai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) or (chinh sach)) - thanh trung tam nhung cong tac ((tran ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sach) OR (chinh sach)) - thanh trung tam nhung cong tac ((tran ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) or (chinh sach)) - thanh trung tam nhung cong tac ((tran ban) or (toan ban))*.