Perhaps you should try some spelling variations:
doing sin » dong sin, doing un
doing von » doing un, ing von
when song » when songs, when so, when soft
song ming » song bing, song min, gong min
dann can » dann bin, dan cao, dann hat
can when » can women, can we, can win
yang yun » yang jun, tang yun, yang yue
yang jui » yang judy, yang di, yang yi
yang xi » yang di, yang yi

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: ((doing sin) OR (doing von)) dann can when song ming ((yang yun) OR (((yang jui) OR (yang xi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: ((doing sin) or (doing von)) dann can when song ming ((yang yun) or (((yang jui) or (yang xi)))) ;*.