Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trinh viet » ninh viet, trinh vat
doi chieu » doc hieu, doi chi, ho chieu
hang nong » thang long, han tong
trinh va » trinh van, trinh vat, trinh ve
dan toan » van toan, dan than, manh toan
van tuan » van quan, van ban, anh tuan

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 - hanh ((trinh va) or (trinh viet)) hang nong ((dan toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh ((trinh va) OR (trinh viet)) hang nong ((dan toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh ((trinh va) or (trinh viet)) hang nong ((dan toan) or (van tuan)) cau*.