Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh manh » lanh manh, cach mang, van manh
nguon van » nguon von, nguyen van, nguong dan
nguoi van » nguoi san, nguoi dan, nguoi va
ho chieu » theo chieu, hoc thieu, doi chieu
cua dong » chua dong, cua cong, cua dang
ban can » ban dan, ban hang, ban hanh

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 - ((canh manh) or (canh tranh)) cua dong ((nguon van) or (nguoi van)) ban can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((canh manh) OR (canh tranh)) cua dong ((nguon van) OR (nguoi van)) ban can.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((canh manh) or (canh tranh)) cua dong ((nguon van) or (nguoi van)) ban can*.