Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
hanh tang » hanh trang, anh tang, hanh mang
cua thong » cua thuong, cua khong, cua tong
nhuan ban » nhat ban, thuat ban, nhuan tai
tang cua » mang cua, hang cua, tang luan

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 thong ((cong thanh) or (cong ty)) ((nhuan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh tang cua thong ((cong thanh) OR (cong ty)) ((nhuan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - hanh tang cua thong ((cong thanh) or (cong ty)) ((nhuan ban) or (van ban))*.