Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh ban » trinh ban, tranh hang, tranh luan
ban thanh » ban hanh, ban hang
long doan » cong doan, dong doanh, rong doanh
khoan cam » khoan va, phan cam, thuan cam
hoc hieu » hoc thieu, hoc hien, doc hieu
long dan » cong dan, nong dan, long van
khoa cam » khoa kham, khoa ma, hoa 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 ban thanh ((long dan) or (long doan)) ((khoan cam) or (khoa cam))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh ban thanh ((long dan) OR (long doan)) ((khoan cam) OR (khoa cam)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh ban thanh ((long dan) or (long doan)) ((khoan cam) or (khoa cam))*.