Perhaps you should try some spelling variations:
yang guang » yang yang, yan guan, yang liang
than china » tuan china, han china, wuhan china
wang yang » wang yan, wang liang, wang yanling
china pei » china peo, china pim, china pt
you xian » you liang, you can, you mean
pei yang » wei yang, hui yang, pei yun
long ago » long arm
yang xi » yang di, yang yi, yang jui
long du » long d, long do, long run

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) OR (you xian))) OR (yang guang)) than china pei yang xi ((long ago) OR (long du)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((((wang yang) or (you xian))) or (yang guang)) than china pei yang xi ((long ago) or (long du)) ;*.