Perhaps you should try some spelling variations:
wang yong » wang yang, wang hyoung, wang yan
congo shu » cong shu
yong yan » yang yang, dong yang, ying yang
song min » song ming, gong min, jong min
yi song » yi rong, li song, kim song
yan di » yang di, pan di, yan zi
di yi » dai yi, li yi, qi yi
shin » skin, sein, thin

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yan di yi song min ((congo shu) or (song shin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yong yan di yi song min ((congo shu) OR (song shin)) ;.
• Adding a wildcard symbol may retrieve word variants: wang yong yan di yi song min ((congo shu) or (song shin)) ;*.