Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
dang cong » dung cong
tung cua » trung cua, tuong cua, dung cua
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh
phan van » pham van, thanh van, luan van

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 cua dang cong tan ((hang va) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung cua dang cong tan ((hang va) OR (phan van)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung cua dang cong tan ((hang va) or (phan van))*.