Perhaps you should try some spelling variations:
young john » kong john, young jean
yang guang » yan guan, yang liang
yang yang » wang yang, wang yan
zhang kim » zhang xin, kang kim, zhang i
wong john » wrong john, kong john, longo john
li zhang » _ zhang
yuan li » yuan lin, guan li, yuan zi

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 ((yang guang) OR (yang yang)) yuan li zhang kim ((young john) OR (wong john)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((yang guang) OR (yang yang)) yuan li zhang kim ((young john) or (wong john)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((yang guang) OR (yang yang)) yuan li zhang kim ((young john) or (wong john)) ;*.