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
qua dung » quang dung, qua song, qua cong
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
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 ((qua dung) or (su dung)) cong san ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trang ((qua dung) OR (su dung)) cong san ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trang ((qua dung) or (su dung)) cong san ((toan cau) or (toan ban))*.