Perhaps you should try some spelling variations:
luan chung » luan chinh
bang luan » tang luan, hang luan, dung luan
theo chu » theo chieu, cho chu, chao chu
anh bang » anh hoang, anh quang, tinh bang
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap
chu han » chu van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu han - anh bang luan chung ((cong dan) or (((cong tac) or (cong ty)))) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu han - anh bang luan chung ((cong dan) OR (((cong tac) OR (cong ty)))) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chu han - anh bang luan chung ((cong dan) or (((cong tac) or (cong ty)))) toan cao*.