Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
toan luan » doanh luan, tranh luan, quan luan
tang luan » dung luan
toan quan » tran quang, doan quang, van quan
chi tach » chiu trach, chiet tach, chi thanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van ban
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi tach - thanh ((((toan luan) OR (tang luan))) or (toan quan)) nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi tach - thanh ((((toan luan) OR (tang luan))) OR (toan quan)) nhung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chi tach - thanh ((((toan luan) OR (tang luan))) or (toan quan)) nhung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: doi chi tach - thanh ((((toan luan) OR (tang luan))) or (toan quan)) nhung cong tac toan ban*.