Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
wang tuan » wang xuan, wang yuhan, wang hua
hua irene » hua ren
ping john » king john, wong john
kong john » king john, wong john, longo john
tuan hua » tan hua, tuan vu, yuan hui
von sam » von sa, von sap, von scham
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 wang tuan hua irene ((ping john) OR (kong john)) ((von sam) OR (kong sar)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang tuan hua irene ((ping john) OR (kong john)) ((von sam) or (kong sar)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang wang tuan hua irene ((ping john) OR (kong john)) ((von sam) or (kong sar)) ;*.