Perhaps you should try some spelling variations:
hyoung yan » kyoung yang, hyoung gun, kyoung yun
yan huang » yang guang, yan guan, yan liang
wang yong » wang hyoung, wang yan, wang shiyong
wang yang » wang yan, wang liang, wang yanling
jia zhang » jie zhang, jia zhangke, xiao zhang
zhang yan » zhang fan, zhang jian, wang yan

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 OR wing) hyoung yan huang ((wang yong) OR (wang yang)) jia zhang yan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wing) hyoung yan huang ((wang yong) OR (wang yang)) jia zhang yan ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wing) hyoung yan huang ((wang yong) OR (wang yang)) jia zhang yan ;*.