Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
canh doanh » hanh doanh, chinh doanh, doanh doanh
chua bang » chu bang, chua nang, chua xang
doc hieu » toc thieu, hoc thieu, hoc hien
cua bang » cua ban, cua dang, cua hang
cong tan » cong tac, cong san, cong thanh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu nganh - canh doanh ((cua bang) or (chua bang)) cong tan ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu nganh - canh doanh ((cua bang) OR (chua bang)) cong tan ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doc hieu nganh - canh doanh ((cua bang) or (chua bang)) cong tan ((toan ban) or (van ban))*.