Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
doc hieu » toc thieu, hoc thieu, hoc hien
trung ha » trung hoc, trung tam, trung cap
ha nhung » hoa nhung, hay nhung, pha nhung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - thanh trung ha nhung ((cong tan) or (cong tac)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - thanh trung ha nhung ((cong tan) OR (cong tac)) phan dau.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - thanh trung ha nhung ((cong tan) or (cong tac)) phan dau*.