Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong san » cong tac
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 ((dieu hanh) or (chieu sach)) - hanh trang cua dung cong san ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((dieu hanh) OR (chieu sach)) - hanh trang cua dung cong san ((toan tap) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc ((dieu hanh) or (chieu sach)) - hanh trang cua dung cong san ((toan tap) or (toan ban))*.