Perhaps you should try some spelling variations:
hyoung quan » hyoung gun
quan guan » gan guan, quan guo, yan guan
guan wang » yuan wang, qian wang, yan wang
wang yang » wang yan, wang liang, wang yanling
kang chen » chang chen, jane chen, kang han
dang hadi » dang hai
yang jun » yang jui, pang jun, yang jin

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 hyoung quan guan wang yang jun ((kang chen) OR (dang hadi)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang hyoung quan guan wang yang jun ((kang chen) or (dang hadi)) ;*.