Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hang nong » thang long, han tong
pham toan » pham tuan, pham tan, phap toan
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
cua hang » cua dang, cua nhung, cua cong
tac toan » tap toan, tam toan, hach 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 - hanh tinh cua hang nong ((tac toan) or (pham toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tinh cua hang nong ((tac toan) OR (pham toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tinh cua hang nong ((tac toan) or (pham toan)) cau*.