Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
duong cong » dung cong, luong cong, duong trong
doi chieu » doc hieu, doi chi, ho chieu
trung am » trung nam, trung dam, trung cap
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
khoan va » doan va, khoa ma, nhan va

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 - thanh ((trung am) or (trung tam)) duong cong san ((than cap) or (khoan va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((trung am) OR (trung tam)) duong cong san ((than cap) OR (khoan va)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((trung am) or (trung tam)) duong cong san ((than cap) or (khoan va))*.