Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, nhung don
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, ban than, van than

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