Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
hanh hang » thanh hang, hang hang, hanh han
trong tac » trong cac, tuong tac, trong tuc
trong tan » trong quan, trong cac, trong ca
hang qua » hang quan, hang cua, hanh qua
qua dung » quang dung, su dung, qua song

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 - hanh hang qua dung ((trong tac) or (trong tan)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - hanh hang qua dung ((trong tac) OR (trong tan)) van ban*.