Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan guan » yihan guan, yan guan
chen sang » chen yang, chen wang, chen shuang
sang minh » kang minah, anh minh, song min
song thin » song jin, song min
guan jui » guan li, ruan ji
jui chen » yi chen

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yidan guan jui chen sang minh ((song shin) or (song thin)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan guan jui chen sang minh ((song shin) OR (song thin)) ;*.