Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » thong cong, hang cong, nhung don
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
thanh tu » hanh tu, nhanh tu, thanh tung

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: doi chieu sang - canh tranh cua ((nhung cong) OR (dung cong)) doanh thanh tu~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - canh tranh cua ((nhung cong) or (dung cong)) doanh thanh tu*.