Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung dong » nhung don, nhung cong, nhung dung
dong doanh » dung doanh, trong doanh, doanh doanh
doanh phan » doanh nhan, doan phan, doanh thanh
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, thanh va
trinh va » trinh van, trinh vat, trinh ve

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 sach - canh ((tranh va) OR (trinh va)) nhung dong doanh phan tu~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh ((tranh va) or (trinh va)) nhung dong doanh phan tu*.