Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh manh » hanh mang, lanh manh, hoang manh
bang song » nang song
danh toan » manh toan, anh toan, dang toan
manh cua » doanh cua, ban cua
cua bang » chua bang, cua ban, cua dang
dan toan » van toan, dan than, manh toan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh manh cua bang song ((danh toan) OR (dan toan)) cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh manh cua bang song ((danh toan) or (dan toan)) cau*.