Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
than cap » khan cap, thanh lap, thanh cac
phan cac » nhan cach, phan dau, phan lap
tung ap » tung dan, tung bay, tung mai
tang ap » tang van, tang tai, tang dan

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 ((tung ap) or (tang ap)) dung cong dan ((than cap) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh ((tung ap) OR (tang ap)) dung cong dan ((than cap) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh ((tung ap) or (tang ap)) dung cong dan ((than cap) or (phan cac))*.