Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
quan hang » quan hoang, quan lang, quan hanh
luan hoan » luan van
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man
cho chu » cho thue

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 (cho chu)) xanh - canh tranh ((quan hang) or (luan hoan)) cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (cho chu)) xanh - canh tranh ((quan hang) OR (luan hoan)) cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (cho chu)) xanh - canh tranh ((quan hang) or (luan hoan)) cong dan than ban*.