Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chinh luat » hinh luat, trinh luat, chinh phat
chinh luan » chinh ngan, trinh luan, binh luan
duong manh » duong van
cong manh » cong danh, cong thanh, hoang manh
ho chieu » theo chieu, hoc thieu, doi chieu
toan tap » toan ban

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 ((chinh luat) OR (chinh luan)) chung ((cong manh) or (duong manh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((chinh luat) OR (chinh luan)) chung ((cong manh) OR (duong manh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((chinh luat) OR (chinh luan)) chung ((cong manh) or (duong manh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((chinh luat) OR (chinh luan)) chung ((cong manh) or (duong manh)) toan tap*.