Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu tang » nhieu tang, hieu lang, hieu tieng
doanh qua » doanh quan, doanh cua, danh qua
dung cong » dung trong
hoi hieu » hoi phieu, hoi tieu, moi hieu
qua dung » quang dung, su dung, qua song
san toan » van toan, manh toan, xuan toan
dan toan » van toan, dan than, manh toan

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 tang - hanh doanh qua dung cong ((san toan) or (dan toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi hieu tang - hanh doanh qua dung cong ((san toan) OR (dan toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoi hieu tang - hanh doanh qua dung cong ((san toan) or (dan toan)) cau*.