Perhaps you should try some spelling variations:
yuan wang » yan wang, yuan kang, yuan chang
wang yang » wang yan, wang liang, wang yanling
juan rene » juan meng, juan rana
dan juan » san juan, don juan, diaz juan
yang jin » yang jie, yang jun, ying jin
yang lin » wang lin, yang li, yang liang
wong yue » wang yue, hong yu

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) OR (wang yang)) dan juan rene ((yang jin) OR (yang lin)) wong yue ;~.
• Adding a wildcard symbol may retrieve word variants: ((yuan wang) or (wang yang)) dan juan rene ((yang jin) or (yang lin)) wong yue ;*.