Perhaps you should try some spelling variations:
wang yidan » wang yan
song sein » song shin, song jin, song min
kang min » kan min, tang min, kang minah
wang hui » wang hua, wang zhi, wang wei
yang li » yang lin, yang di, yang yi
yang xi » yang di, yang yi, yang jui
wu kang » wu guang

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 yidan ((yang li) OR (yang xi)) wu kang min ((((tong hui) OR (wang hui))) OR (song sein)) ;~.
• Adding a wildcard symbol may retrieve word variants: wang yidan ((yang li) or (yang xi)) wu kang min ((((tong hui) or (wang hui))) or (song sein)) ;*.