Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
hanh cong » thanh cong, hang cong, hanh dong
dang cong » dung cong
van hanh » van thanh, ban hanh, van anh
hanh cap » hanh cac, hanh cat, hanh cad
dat may » dam may

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

• Performing a fuzzy search may retrieve terms with similar spellings: dat may tinh - hanh doanh luan ((hanh cong) or (dang cong)) van hanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dat may tinh - hanh doanh luan ((hanh cong) OR (dang cong)) van hanh cap*.