Perhaps you should try some spelling variations:
nhien nhung » nhieu nhung, nghiep nhung, bien nhung
hanh doanh » hang doanh, chinh doanh, doanh doanh
hien nhung » bien nhung, hien chung, tien nhung
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong thanh
gian cau » gian chau, gian cac, gian cam
gian cua » gian xu, ban cua

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