Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong danh » cuong danh, cong dan, cong thanh
dong anh » hong anh, dong thanh, hoang anh
toan ban » van ban

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) OR (hieu nganh)) - canh tranh cua nhung ((cong danh) or (dong anh)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (hieu nganh)) - canh tranh cua nhung ((cong danh) OR (dong anh)) toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (hieu nganh)) - canh tranh cua nhung ((cong danh) or (dong anh)) toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (hieu nganh)) - canh tranh cua nhung ((cong danh) or (dong anh)) toan ban*.