Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dien sach » dien anh
tung quan » tuong quan, trung quan, dung quan
quan dung » quang dung, quan duong, qua dung
cong bang » cuong bang, dong bang, hong bang
cong ban » cong san, cong tan, cong dan
hang cau » hang dau, hang ca, nhung cau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) or (dien sach)) - thanh tung quan dung ((cong ban) OR (cong bang)) hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (dien sach)) - thanh tung quan dung ((cong ban) OR (cong bang)) hang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (dien sach)) - thanh tung quan dung ((cong ban) OR (cong bang)) hang cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (dien sach)) - thanh tung quan dung ((cong ban) OR (cong bang)) hang cau*.