Perhaps you should try some spelling variations:
kinder sind » kinder und, kinder doing, kinder einer
kinder ein » kinder einer, binder eine, kinder im
wang yang » wang yan, wang liang, wang yanling
yang jean » yang dean, young jean, yang fan
ruan jin » ruan ji, huan jie
jin kang » jin chang, jin kyung, jing fang

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: wang ((wang yang) OR (yang jean)) ruan jin kang ((kinder sind) OR (kinder ein)) von ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((wang yang) or (yang jean)) ruan jin kang ((kinder sind) OR (kinder ein)) von ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((wang yang) or (yang jean)) ruan jin kang ((kinder sind) OR (kinder ein)) von ;*.