Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
hoang ban » hoang van, hang ban, hoang bao
trong tac » trong cac, tuong tac, trong tan
cua dung » cua dang, cua dong, qua dung
toan cao » toan tap
toan ban » van ban
ban cua » ban quan

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 - hoang ban cua dung trong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hoang ban cua dung trong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hoang ban cua dung trong tac ((toan cao) or (toan ban))*.