Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
xuan trong » xuan truong, quan trong, xuan trung
doi chieu » doc hieu, doi chi, ho chieu
hanh tran » hanh trang, thanh tran, hanh tram
tran xuan » tran quang, tran van
cong san » cong tac
tang ca » tang cua, hang ca, tang ma
tan ca » tan cua, dan ca, tan ha

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 tran xuan trong cong san ((tan ca) OR (tang ca))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - hanh tran xuan trong cong san ((tan ca) OR (tang ca))*".