Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
doanh va » doan va, doanh tai, doanh cua
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang
ho hieu » ho chieu, hoi hieu, nho 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 lang - doanh doanh va nhung cong ((dan toan) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - doanh doanh va nhung cong ((dan toan) OR (ban than)) cau*.