Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » trieu tinh, diep tinh, bien tinh
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cap » khan cap, thanh lap, thanh cac
co lieu » cot lieu, co hieu, so lieu

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: co lieu tinh - manh ((trung va) OR (trung tam)) nhung cong tan than cap~.
• Adding a wildcard symbol may retrieve word variants: co lieu tinh - manh ((trung va) or (trung tam)) nhung cong tan than cap*.