Perhaps you should try some spelling variations:
zhang yan » zhang fan, zhang jian, wang yan
lang yan » wang yan, wang yang, yang yang
yang hua » wang hua, yang hui, yang jui
ying hua » ming hua, wang hua, ying zhu
yang yi » yang di, yang xi, yang jui
yan con » yan cong, dan con, fan cone
con shu » cong shu

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: ((lang yan) OR (yang yi)) ((yang hua) OR (ying hua)) rene zhang yan con shu ;~.
• Adding a wildcard symbol may retrieve word variants: ((lang yan) or (yang yi)) ((yang hua) or (ying hua)) rene zhang yan con shu ;*.