Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cuong tap » cong tac, luong tai, cong tan
luong tap » luong tai, luong tham, luong thai
hoc hieu » hoc thieu, hoc hien, doc hieu
quan cap » quan cau, quan lap, quang cao

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: hoc hieu nganh - canh tranh van nhung ((cuong tap) OR (luong tap)) quan cap~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu nganh - canh tranh van nhung ((cuong tap) or (luong tap)) quan cap*.