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

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 huan li zhang kim ((young john) OR (wong john)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yang guang huan li zhang kim ((young john) or (wong john)) ;*.