Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dong thanh » truong thanh
thanh than » thanh thanh, thanh thang, thanh toan
trinh cua » tinh cua, trinh quan, trinh luan
dong dong » dong duong, cong dong, dung dong
ho chieu » theo chieu, hoc thieu, doi chieu
than cau » toan cau, phan cau, than cap

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 ((trinh cua) or (trinh luat)) dong dong thanh than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trinh cua) OR (trinh luat)) dong dong thanh than cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trinh cua) or (trinh luat)) dong dong thanh than cau*.