Perhaps you should try some spelling variations:
von sprach » von sprache, von sprachen
wang liang » wang yang
liang sun » liang dan, liang tan, wing sun
kong saur » kong sar, kong siu, kong your
yu chen » yu cheng, yi chen, yulu chen
yang yi » yang jui
yang xi » yang jui
sun yu » lun yu, sun ye, yun yu

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 liang sun yu chen ((((yang yi) OR (yang xi))) OR (yang di)) ((von sprach) OR (kong saur)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang liang sun yu chen ((((yang yi) or (yang xi))) or (yang di)) ((von sprach) or (kong saur)) ;*.