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 dan » dung dan, trung dai, dung dat
dan dung » van dung, tin dung, ap dung
cong tan » cong tac, cong san, cong thanh
ban cau » bang cau, ban can, van cau

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