Perhaps you should try some spelling variations:
yang guang » yang liang
yang yang » wang yang, wang yan
yan guan » gan guan, yan yuan, yihan guan
ying shu » ying zhu, cong shu, ying ph
ying hua » ming hua, wang hua, ying zhu
liu yan » lili yan
yan li » yang li, yuan li, gan li

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 guang) OR (yang yang))) OR (yan guan)) rui liu yan li ((ying shu) OR (ying hua)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang ((((yang guang) or (yang yang))) or (yan guan)) rui liu yan li ((ying shu) or (ying hua)) ;*.