Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu lang » chieu sang, hieu quang, nhieu tang
chua dong » cua dong, ha dong, huy dong
phong van » phung van, thong van, phong va
van thanh » ban thanh, van tuan
thanh lap » thanh san, phan lap, thanh hai
vo hieu » co hieu, va hieu, cao hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vo hieu lang - hanh doanh ((cua cong) or (chua dong)) phong van thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vo hieu lang - hanh doanh ((cua cong) OR (chua dong)) phong van thanh lap.
• Adding a wildcard symbol may retrieve word variants: vo hieu lang - hanh doanh ((cua cong) or (chua dong)) phong van thanh lap*.