Perhaps you should try some spelling variations:
nang quan » ban quan, nang suat
dung cong » dung trong
hoi hieu » hoi phieu, hoi tieu, moi hieu
nang qua » nang dua, nang cua, nang quy
cong ban » cong bang, cong san, cong tan
ban than » ban thanh, van thanh, ban hang
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, nho hieu, co hieu

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

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