Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
canh doanh » hanh doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
doan van » doan va, hoang van, luan van

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 ((chieu xanh) OR (chiet tach)) - canh doanh cua ((hang cong) OR (hang nong)) doan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) or (chiet tach)) - canh doanh cua ((hang cong) OR (hang nong)) doan van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) or (chiet tach)) - canh doanh cua ((hang cong) OR (hang nong)) doan van ban*.