Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
truong ca » truong cao, truong va, truong dai
van thang » van thanh, van khang, van hang
ho chieu » theo chieu, hoc thieu, doi chieu
trong ca » trong cac, trong nha
van than » van thanh, van tuan, van phan

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 ca) or (trong ca)) nhung cong ((van than) OR (van thang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((truong ca) OR (trong ca)) nhung cong ((van than) OR (van thang)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((truong ca) or (trong ca)) nhung cong ((van than) OR (van thang)) cau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((truong ca) or (trong ca)) nhung cong ((van than) OR (van thang)) cau*.