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
tung chua » cung chua, cong chua, dung nhua
chua dong » cua dong, ha dong, huy dong
dong cong » duong cong, dung cong, dang cong
tranh ban » trinh ban, tranh hang, tranh luan
cong tan » cong tac, cong san, cong thanh
tran 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 chua dong cong tan ((tranh ban) or (tran van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung chua dong cong tan ((tranh ban) OR (tran van)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung chua dong cong tan ((tranh ban) or (tran van))*.