Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong han » thuong mai, thuong va, thuong gap
doi chieu » doc hieu, doi chi, mot chieu
van thang » van thanh, van khang, van hang
trong ban » trong san, trong tan, trong quan
cong van » cong vang, cong san, song van
phan dau » phan tu, hang dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh cong van thang ((thuong han) or (trong ban)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh cong van thang ((thuong han) OR (trong ban)) phan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh cong van thang ((thuong han) or (trong ban)) phan dau*.