Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong han » thuong mai, thuong gap, phuong hoang
doi chieu » doc hieu, doi chi, mot chieu
thuong va » truong va, thong va, thuong mai
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
phan cau » phan dau, phan cac, phan tu

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) OR (cong san)) cuong ((thuong han) or (thuong va)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((cong tan) OR (cong san)) cuong ((thuong han) OR (thuong va)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh ((cong tan) OR (cong san)) cuong ((thuong han) or (thuong va)) phan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((cong tan) OR (cong san)) cuong ((thuong han) or (thuong va)) phan cau*.