Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
canh anh » anh anh, canh tranh, thanh anh
van toan » van tuan, van tan, van thanh
dan than » dan chan, ban than, van than
va dung » van dung, va duong, vat dung
anh va » hanh va

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 - canh anh va dung cong ((van toan) or (dan than)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh anh va dung cong ((van toan) OR (dan than)) tap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh anh va dung cong ((van toan) or (dan than)) tap*.