Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong tang » cong thang, cong lang, cong vang
toc hieu » toc thieu, doc hieu, hoc thieu
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
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: toc hieu manh - thanh trung va nhung ((cong tan) or (cong tang)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - thanh trung va nhung ((cong tan) OR (cong tang)) phan dau.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - thanh trung va nhung ((cong tan) or (cong tang)) phan dau*.