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