Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
canh manh » lanh manh, canh tranh, cach mang
cua trong » cua truong, cua trung, qua trong
manh cua » doanh cua, ban cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
chan dau » phan dau, han dau, chan doan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh manh cua trong ((cong dan) or (cong san)) chan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - canh manh cua trong ((cong dan) OR (cong san)) chan dau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh manh cua trong ((cong dan) or (cong san)) chan dau*.