Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » thong cong, hang cong, nhung don
cho chinh » chon chinh, che chinh, cuoc chinh
dung cong » dung trong
trung ha » trung hoc, trung tam, trung cap
dan than » dan chan, ban than, van than
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: cho chinh sach - thanh trung ha ((nhung cong) or (dung cong)) dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho chinh sach - thanh trung ha ((nhung cong) OR (dung cong)) dan than cao.
• Adding a wildcard symbol may retrieve word variants: cho chinh sach - thanh trung ha ((nhung cong) or (dung cong)) dan than cao*.