Perhaps you should try some spelling variations:
zhigang li » zhang li
kyoung yun » young yun, kyoung yang, hyoung gun
wang song » wang yong, wang hong, wang yang
yang jui » yang judy, yang di, yang yi
li rene » i rene, ii rene, luis rene
yang xi » yang di, yang yi
sonne » sinne, donne

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 song) OR (wang sonne)) zhigang li rene ((yang xi) OR (yang jui)) kyoung yun ;~.
• Adding a wildcard symbol may retrieve word variants: ((wang song) or (wang sonne)) zhigang li rene ((yang xi) or (yang jui)) kyoung yun ;*.