Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trang » thanh trung, canh tranh, hanh trinh
hien hanh » dieu hanh
cua hang » cua dang, cua nhung, cua ban
cong san » cong tac
san than » sang than, san thanh, ban than
than tap » toan tap, han tap, phan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien hanh) or (chiet tach)) - hanh trang ((cua hang) or (cua cong)) cong san than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien hanh) OR (chiet tach)) - hanh trang ((cua hang) OR (cua cong)) cong san than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien hanh) or (chiet tach)) - hanh trang ((cua hang) or (cua cong)) cong san than tap*.