Perhaps you should try some spelling variations:
von sprach » von sprache, von sprachen
wang wang » wang yang, wang liang, wang yan
wang sang » wang yang, wang liang, wang yan
kong star » kong sar
sang yu » sang hyup, wang yue, mang yul
yu chen » yu cheng, yi chen, yulu chen
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: wang wang sang yu chen ((yang yi) OR (yang di)) ((von sprach) OR (kong star)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang wang sang yu chen ((yang yi) or (yang di)) ((von sprach) or (kong star)) ;*.