Perhaps you should try some spelling variations:
tang luan » dung luan
theo chu » theo chieu, cho chu, chao chu
anh tang » anh bang, anh dang, anh nang
luan ung » luan hung, luon ung, luan chung
cong dan » cong san, cong tan, huong dan
cong tac » cong ty
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 tang luan ung ((cong dan) OR (cong tac)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu han - anh tang luan ung ((cong dan) OR (cong tac)) toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chu han - anh tang luan ung ((cong dan) OR (cong tac)) toan cao*.