Perhaps you should try some spelling variations:
doing sin » dong sin, doing un, doing von
when gong » when songs, when good, when goal
yang yang » wang yang, wang yan
sin dann » sein dann, bin dann, ein dank
gong min » jong min, song min, gong meng
yang yue » wang yue, yang yun, yang yi
yang jui » yang judy, yang xi, yang yi
dann yi » dann bin
yi when » ii when

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 dann yi when gong min ((((yang yang) OR (yang yue))) OR (((yang di) OR (yang jui)))) ;~.
• Adding a wildcard symbol may retrieve word variants: doing sin dann yi when gong min ((((yang yang) or (yang yue))) or (((yang di) or (yang jui)))) ;*.