Perhaps you should try some spelling variations:
wang yidan » wang yan
juan rene » juan meng, juan rana
wang ban » wang yan, wang dan, wang yang
hua rene » hua ren
yang jie » yang jin, yang di, yang jui
wang yue » wong yue, wang hua, wang yan
yang yi » yang di, yang xi, 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: yuan ((wang yidan) OR (wang ban)) ((hua rene) OR (juan rene)) ((yang jie) OR (yang yi)) wang yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yuan ((wang yidan) or (wang ban)) ((hua rene) OR (juan rene)) ((yang jie) or (yang yi)) wang yue ;~".
• Adding a wildcard symbol may retrieve word variants: yuan ((wang yidan) or (wang ban)) ((hua rene) OR (juan rene)) ((yang jie) or (yang yi)) wang yue ;*.