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
cuong tap » luong tap, luong tai, cong tan
tung cua » trung cua, tuong cua, dung cua
cong tac » cong ty
toan ban » van ban

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 cong ((cong tac) or (cuong tap)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh tung cua cong ((cong tac) OR (cuong tap)) toan ban*.