Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
lieu tinh » diep tinh, bien tinh
trinh cua » trinh luat, trinh quan, trinh luan
tinh cua » sinh cua, tinh chat, tranh cua
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)) - hanh ((trinh cua) OR (tinh cua)) nhung cong tac nang ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co ((lieu tinh) or (trieu tinh)) - hanh ((trinh cua) OR (tinh cua)) nhung cong tac nang ban~".
• Adding a wildcard symbol may retrieve word variants: co ((lieu tinh) or (trieu tinh)) - hanh ((trinh cua) OR (tinh cua)) nhung cong tac nang ban*.