Perhaps you should try some spelling variations:
nhung doanh » nhung danh, dung doanh, nhung don
doanh luan » doanh nhan
hieu manh » chieu xanh, hieu nganh, dieu hanh
luan cong » luat cong, luong cong, luan chung
cong cong » cong dong, trong cong, dung cong
cong vang » cong lang, cong quang, cong ngang
hoc hieu » hoc thieu, hoc hien, doc hieu

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 - nhung doanh luan cong cong vang ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - nhung doanh luan cong cong vang ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - nhung doanh luan cong cong vang ((toan ban) or (van ban))*.