Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dung cong » dung trong
sang than » cang thang, dang thanh, sang tao
ho chieu » theo chieu, hoc thieu, doi chieu
san than » san thanh, ban than, van than
va dung » van dung, va duong, vat dung

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