Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
doanh cua » doanh luan
cong cong » cong dong, trong cong, dung cong
ban thanh » ban hanh, ban hang
thanh cao » thanh ca, thanh cac, thanh thao
theo toc » ho toc, thac toc, theo bo
theo don » theo dong, theo doi, theo duong
cong ban » cong bang, cong san, cong tan

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 ban 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 ban thanh cao.
• Adding a wildcard symbol may retrieve word variants: ((theo toc) or (theo don)) sach - doanh doanh cua cong cong ban thanh cao*.