Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
hieu ca » hieu cac, hieu cua, hieu va
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((((chiet tach) or (hieu ca))) or (chinh sach)) - thanh trung cua nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chiet tach) OR (hieu ca))) OR (chinh sach)) - thanh trung cua nhung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chiet tach) or (hieu ca))) or (chinh sach)) - thanh trung cua nhung cong tan van ban*.