Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
manh toan » thanh toan, anh tuan
ho chieu » theo chieu, hoc thieu, doi chieu
trinh va » trinh van, trinh vat, trinh ve
dan toan » van toan, dan than, xuan toan

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