Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
nang sang » nang song, nong san
thanh cau » thanh chau, thanh mau, nhanh cau
hoc hieu » hoc thieu, hoc hien, doc hieu
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
sang va » hang va, song va, sang ma
va dung » van dung, va duong, vat dung

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 manh - nang sang va dung ((cong van) OR (song van)) thanh cau~.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - nang sang va dung ((cong van) or (song van)) thanh cau*.