Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh doanh » hang doanh, chinh doanh, doanh doanh
hoac khong » hoa khong, hoc khong, hay khong
theo hieu » theo chieu, theo tieu, thien hieu
hua khong » hoa khong, cua khong, phuc khong
cong san » cong tac
san van » tan van, luan van, tran van
van tap » van tai, van tan, han tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu quang - hanh doanh ((hua khong) or (hoac khong)) cong san van tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu quang - hanh doanh ((hua khong) OR (hoac khong)) cong san van tap.
• Adding a wildcard symbol may retrieve word variants: theo hieu quang - hanh doanh ((hua khong) or (hoac khong)) cong san van tap*.