Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » diep tinh, bien tinh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
tac nang » tac vang, tai nang, tap nang
nang ban » hang ban, nang quan, nang sang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: co ((lieu tinh) OR (trieu tinh)) - canh tranh cua nhung cong tac nang ban~.
• Adding a wildcard symbol may retrieve word variants: co ((lieu tinh) or (trieu tinh)) - canh tranh cua nhung cong tac nang ban*.