Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, hien hanh, hieu van
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
tac doan » tap doan, tan doan, thai doan
doan ca » doan cap, dan ca, doan va

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) or (hieu nganh))) or (dieu hanh)) - canh tranh cua nhung cong tac doan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hieu manh) OR (hieu nganh))) OR (dieu hanh)) - canh tranh cua nhung cong tac doan ca.
• Adding a wildcard symbol may retrieve word variants: hoc ((((hieu manh) or (hieu nganh))) or (dieu hanh)) - canh tranh cua nhung cong tac doan ca*.