Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
chiet tach » chieu sach
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
cong van » cong vang, song van, cong tan
cong san » cong tac
phan dau » phan tu, hang dau

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 xanh) OR (chiet tach)) - hanh doanh cua thong ((cong van) OR (cong san)) phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chiet tach)) - hanh doanh cua thong ((cong van) OR (cong san)) phan dau~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chiet tach)) - hanh doanh cua thong ((cong van) OR (cong san)) phan dau*.