Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
hoc hieu » hoc thieu, hoc hien, doc hieu
cong van » cong san, song van, cong tan
chat cam » chat cao, thuat cam, chat va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - canh tranh van nhung ((cong van) or (((cong vang) or (cong lang)))) chat cam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh van nhung ((cong van) OR (((cong vang) OR (cong lang)))) chat cam.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh van nhung ((cong van) or (((cong vang) or (cong lang)))) chat cam*.