Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
guang yuan » fang yuan, huang juan
young john » young jean
wang yang » wang yan, wang liang, wang yanling
zhang kim » zhang xin, kang kim, zhang i
kong john » king john, longo john, wrong john
wong john » wrong john, longo john, king 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 yuan li zhang kim ((((young john) OR (kong john))) OR (wong john)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang guang yuan li zhang kim ((((young john) OR (kong john))) or (wong john)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang yang guang yuan li zhang kim ((((young john) OR (kong john))) or (wong john)) ;*.