Perhaps you should try some spelling variations:
dung doanh » dung dan, dung dong
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
nhan hung » nhanh hung, phan hung, nhan ung
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
gian cau » gian chau, gian cac, gian cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - ((hanh doanh) or (dung doanh)) nhan hung ((cong dan) or (cong san)) gian cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - ((hanh doanh) OR (dung doanh)) nhan hung ((cong dan) OR (cong san)) gian cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - ((hanh doanh) or (dung doanh)) nhan hung ((cong dan) or (cong san)) gian cau*.