Perhaps you should try some spelling variations:
yan sang » yan wang, yang yang, yan liang
sang yu » sang hyup, wang yue, mang yul
yu chen » yu cheng, yi chen, yulu chen
yang yi » yang xi, yang jui
von sap » von sam, von sach
von sa » von sam, von sl, von sach
wang » wing, wan, lang
sar » sara, star, saur

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 yan sang yu chen ((yang yi) OR (yang di)) ((((von sap) OR (von sa))) OR (kong sar)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yan sang yu chen ((yang yi) or (yang di)) ((((von sap) or (von sa))) or (kong sar)) ;*.