Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
tong cong » trong cong, cong cong, dung cong
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
dan than » dan chan, ban than, dan toan
van than » van thanh, van thang, van tuan

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 ((tong cong) or (thong thong)) ((dan than) or (van than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tinh cua ((tong cong) OR (thong thong)) ((dan than) OR (van than)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tinh cua ((tong cong) or (thong thong)) ((dan than) or (van than)) cau*.