Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
doanh cua » doanh luan
cong cong » cong dong, dung cong, dang cong
van thanh » ban thanh, van tuan
thanh cao » thanh ca, thanh cac, thanh thao
theo toc » ho toc, thac toc, theo bo
theo don » theo dong, theo doi, theo duong

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo toc) or (theo don)) sach - doanh doanh cua ((cong cong) OR (trong cong)) van thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo toc) OR (theo don)) sach - doanh doanh cua ((cong cong) OR (trong cong)) van thanh cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo toc) or (theo don)) sach - doanh doanh cua ((cong cong) OR (trong cong)) van thanh cao".
• Adding a wildcard symbol may retrieve word variants: ((theo toc) or (theo don)) sach - doanh doanh cua ((cong cong) OR (trong cong)) van thanh cao*.