Perhaps you should try some spelling variations:
yang guang » yan guan, yang liang
than china » tuan china, han china, wuhan china
yang yang » wang yang, wang yan
china lei » china led, china less, china law
you xian » you liang, you can, you mean
lei kyun » lee kyung, lee kyu, pei yun
long ago » long arm
kyun xi » kyun pin
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: ((((yang yang) OR (you xian))) OR (yang guang)) than china lei kyun xi ((long ago) OR (long du)) ;~.
• Adding a wildcard symbol may retrieve word variants: ((((yang yang) or (you xian))) or (yang guang)) than china lei kyun xi ((long ago) or (long du)) ;*.