Perhaps you should try some spelling variations:
doanh thanh » danh thanh, doanh nhan, dinh thanh
cua thuong » cua truong, cua phuong, ca thuong
tieu sang » chieu sang, tieu dung, tiem nang
cua khong » hua khong, cua phuong, cua cong
tac vang » cac van, tac dong
tac dung » sach dung, xay dung, tin dung

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: theo tieu sang - doanh thanh ((cua thuong) OR (cua khong)) cong ((tac vang) OR (tac dung)) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu sang - doanh thanh ((cua thuong) or (cua khong)) cong ((tac vang) OR (tac dung)) ban~".
• Adding a wildcard symbol may retrieve word variants: theo tieu sang - doanh thanh ((cua thuong) or (cua khong)) cong ((tac vang) OR (tac dung)) ban*.