Perhaps you should try some spelling variations:
wang kyoung » wang hyoung, hwang byoung, wang yong
yihan guan » yan guan
yang guang » yang yang, yan guan, yang liang
gain yang » dan yang, daun yang, tan yang
kang hay » eang hay, dang hai, kang tae
kang han » kang chen, kong hang, zhang han
yang wu » yang du, yang mu, yang jui

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 kyoung ((yihan guan) OR (yang guang)) gain yang wu ((kang hay) OR (kang han)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang kyoung ((yihan guan) or (yang guang)) gain yang wu ((kang hay) OR (kang han)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang kyoung ((yihan guan) or (yang guang)) gain yang wu ((kang hay) OR (kang han)) ;*.