Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
cua trong » cua truong, cua trung, qua trong
chinh cau » chinh chau, chinh ca, chinh can
tang cua » mang cua, hang cua, tang luan
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, nhanh cau, toan cau
can cau » van cau, ban cau, ca cau

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 - hanh tang cua trong cong dan ((((chan cau) OR (can cau))) or (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tang cua trong cong dan ((((chan cau) OR (can cau))) OR (chinh cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tang cua trong cong dan ((((chan cau) OR (can cau))) or (chinh cau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tang cua trong cong dan ((((chan cau) OR (can cau))) or (chinh cau))*.