Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doanh cua » doanh luan
tan thanh » tran thanh, tang thanh, toan thanh
thanh cap » thanh lap, hanh cap, than cap
cua tinh » va tinh, ha tinh, hoa tinh
cua sinh » hoa sinh, va sinh
manh cua » ban cua
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: o ((cua tinh) OR (cua sinh)) - hanh ((manh cua) or (doanh cua)) nhung cong tan thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o ((cua tinh) OR (cua sinh)) - hanh ((manh cua) OR (doanh cua)) nhung cong tan thanh cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "o ((cua tinh) OR (cua sinh)) - hanh ((manh cua) or (doanh cua)) nhung cong tan thanh cap".
• Adding a wildcard symbol may retrieve word variants: o ((cua tinh) OR (cua sinh)) - hanh ((manh cua) or (doanh cua)) nhung cong tan thanh cap*.