Perhaps you should try some spelling variations:
wang juan » wang jun, wang xuan, huang juan
juan rene » juan meng, juan rana
rene wang » wen wang
long span » long han
yan wang » yuan wang, yang yang, qian wang
wang how » bang how, wang hong, wang hua
long sar » kong sar, long arm, long way

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 OR wan) yan wang juan rene wang how ((long sar) OR (long span)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or wan) yan wang juan rene wang how ((long sar) OR (long span)) ;~".
• Adding a wildcard symbol may retrieve word variants: (wang or wan) yan wang juan rene wang how ((long sar) OR (long span)) ;*.