Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
toc hieu » toc thieu, doc hieu, hoc thieu
tranh va » tranh van, trang va, trinh va
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
doan cap » doanh cao, dan ca, toan cao
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - canh tranh va nang ((cong tan) or (cong tac)) doan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - canh tranh va nang ((cong tan) OR (cong tac)) doan cap.
• Adding a wildcard symbol may retrieve word variants: toc hieu manh - canh tranh va nang ((cong tan) or (cong tac)) doan cap*.