Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
dong skin » dong sin, dong bin
juan rene » juan meng, juan rana
rene yuan » meng yuan
yuan wang » yan wang, yuan kang, yuan chang
roa juan » rojas juan, mora juan, rios juan
tong hui » wang hui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (((dong skin) OR (dof skin)))) roa juan rene yuan wang ((tong hui) or (wang zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (((dong skin) OR (dof skin)))) roa juan rene yuan wang ((tong hui) OR (wang zhi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (((dong skin) OR (dof skin)))) roa juan rene yuan wang ((tong hui) or (wang zhi)) ;".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (((dong skin) OR (dof skin)))) roa juan rene yuan wang ((tong hui) or (wang zhi)) ;*.