Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
cua dang » cua ban
cong van » cong vang, cong san, song van
ban ban » ban banh, van ban, can ban
ban dan » ban hang, ban hanh, ban quan

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