Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh tra » thanh toan, thanh hoa
van nhung » van nhuong, va nhung, van hung
doc hieu » toc thieu, hoc thieu
hanh tam » thanh tam, nhanh tam, hanh tram
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cao » toan cao, thai cao, than cap

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: ((doc hieu) OR (hoc hien)) manh - ((thanh tra) OR (hanh tam)) van nhung cong tac than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc hien)) manh - ((thanh tra) or (hanh tam)) van nhung cong tac than cao~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc hien)) manh - ((thanh tra) or (hanh tam)) van nhung cong tac than cao*.