Perhaps you should try some spelling variations:
ding freund » ein freund
freund das » freud das, freund lass, freunde des
coase what » case what, choose what, care what
yang jin » yang jie, ying jin, shang jin
yang jun » yang jui, pang jun, yang judy
yang yi » yang xi, yang jui
do min » do men

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ding freund das coase what do min ((((yang jin) OR (yang jun))) OR (((yang di) OR (yang yi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: ding freund das coase what do min ((((yang jin) or (yang jun))) or (((yang di) or (yang yi)))) ;*.