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
tan thang » toan thang, tran thang, van thang
tuong ban » tuong bang, trong ban, tuong dan
cong tan » cong tac, cong san, cong thanh

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 tan thang ((thuong han) or (tuong ban)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh cong tan thang ((thuong han) OR (tuong ban)) phan tu.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh cong tan thang ((thuong han) or (tuong ban)) phan tu*.