Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
tranh xuat » tranh cua, tran xuan, tranh luan
xuat duong » xuat thuong, xuat phuong, xuat truong
doi chieu » doc hieu, doi chi, ho chieu
trong van » trong cac
cong san » cong tac
song van » hoang van, duong van, dang van
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 - canh tranh xuat duong ((cong san) or (((song van) OR (trong van)))) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh tranh xuat duong ((cong san) OR (((song van) OR (trong van)))) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh tranh xuat duong ((cong san) or (((song van) OR (trong van)))) phan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh xuat duong ((cong san) or (((song van) OR (trong van)))) phan cau*.