Perhaps you should try some spelling variations:
cases where » cases when, cases while, cures where
doing und » ding und, doing un, ring und
where sun » where can
und dann » und dank, und daten, und denen
ying jin » yang jin, jing ji
yang jie » yang jin, yang jui, yang xi
sun min » sun ein, sun wind, song min
yang yi » yang xi, yang jui

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 und dann cases where sun min ((((ying jin) OR (yang jie))) OR (((yang di) OR (yang yi)))) ;~.
• Adding a wildcard symbol may retrieve word variants: doing und dann cases where sun min ((((ying jin) or (yang jie))) or (((yang di) or (yang yi)))) ;*.