Perhaps you should try some spelling variations:
yang guang » yang yang, yang liang
wang wang » wang yang, wang liang, wang yan
jang yang » wang yang, yang yang, huang yang
kang chen » chang chen, jane chen, tang chun
yan guan » gan guan, yan yuan, yihan guan
kang han » kong hang, zhang han, dang hai
yang xi » yang di, yang yi, 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 wang ((yan guan) OR (yang guang)) jang yang xi ((kang han) OR (kang chen)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang ((yan guan) or (yang guang)) jang yang xi ((kang han) OR (kang chen)) ;~".
• Adding a wildcard symbol may retrieve word variants: wang wang ((yan guan) or (yang guang)) jang yang xi ((kang han) OR (kang chen)) ;*.