Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong van » trong cac
dung dong » dung cong, vung dong, dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dong san » cong san, dong bang, dong von
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh ((truong dai) or (trong van)) dung dong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((truong dai) OR (trong van)) dung dong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((truong dai) or (trong van)) dung dong san toan cau*.