Perhaps you should try some spelling variations:
doanh quang » doan quang, doanh quan, doanh luan
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh doanh » hang doanh, chinh doanh, doanh doanh
quang dung » quang trung, ung dung, cuong dung
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh

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: ho chieu xanh - hanh doanh quang dung ((cong dan) OR (cong tan)) van ban~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh doanh quang dung ((cong dan) or (cong tan)) van ban*.