Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
hieu lang » chieu sang, hieu quang, nhieu tang
hoi hieu » hoi phieu, hoi tieu, moi hieu
anh nang » ganh nang, anh bang, anh dang
nang duc » nang luc, nang doc, nang du
duc cong » duc cuong, nuoc cong, chuc cong
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoi hieu lang - anh nang duc cong cong ((dan than) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu lang - anh nang duc cong cong ((dan than) OR (ban than)) cau.
• Adding a wildcard symbol may retrieve word variants: hoi hieu lang - anh nang duc cong cong ((dan than) or (ban than)) cau*.