Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh gian » doanh giao, doanh giai, dan gian
gian nhung » gian vung, gioi nhung
hieu manh » chieu xanh, hieu nganh, dieu hanh
gian chau » gian cham, gian cua, gian cac
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
gian cau » gian cac, gian cam, gian cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - hanh doanh gian nhung ((cong dan) OR (cong san)) ((gian cau) or (gian chau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh doanh gian nhung ((cong dan) OR (cong san)) ((gian cau) OR (gian chau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh doanh gian nhung ((cong dan) OR (cong san)) ((gian cau) or (gian chau))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh doanh gian nhung ((cong dan) OR (cong san)) ((gian cau) or (gian chau))*.