Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
hoc chieu » hoc thieu, ho chieu, hoc hien
chua dong » cua dong, ha dong, huy dong
cong san » cong tac
san toan » van toan, dan toan, manh toan
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: hoc chieu sach - hanh trang ((cua cong) or (chua dong)) cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trang ((cua cong) OR (chua dong)) cong san toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trang ((cua cong) or (chua dong)) cong san toan ban*.