Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong bang » cuong bang, dong bang, hong bang
hoc hieu » hoc thieu, hoc hien, doc hieu
cua tong » cua cong, cua nong, cua song
cua dong » chua dong, cua cong, cua dang
cong ban » cong san, cong tan, cong dan
than cap » khan cap, thanh lap, thanh cac

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 - canh tranh ((cua tong) or (cua dong)) ((cong ban) or (cong bang)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh ((cua tong) OR (cua dong)) ((cong ban) OR (cong bang)) than cap.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh ((cua tong) or (cua dong)) ((cong ban) or (cong bang)) than cap*.