Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
hanh hang » thanh hang, hang hang, hanh han
hang luan » tang luan, dung luan
van cong » van dong, van phong, phan cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (theo tieu)) xanh - hanh hang luan van cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) xanh - hanh hang luan van cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) xanh - hanh hang luan van cong dan than ban*.