Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
chieu sang » chieu sach, chieu xanh, nhieu tang
cua phuong » cuu phuong, cuc phuong, luan phuong
hieu lang » hieu quang, nhieu tang, hieu van
doanh cua » doanh luan
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: hoc ((hieu lang) OR (chieu sang)) - canh doanh cua phuong ((cong dan) OR (cong tan)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) or (chieu sang)) - canh doanh cua phuong ((cong dan) OR (cong tan)) van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) or (chieu sang)) - canh doanh cua phuong ((cong dan) OR (cong tan)) van ban*.