Perhaps you should try some spelling variations:
wang yidan » wang yan
wang yang » wang yan, wang liang, wang yanling
gang yang » yang yang, huang yang, wang yan
wang dan » wang yan, wang ban, liang dan
yang yin » yang yi, yang jin, yang lin
yin yang » ying yang, yi yang, yin fang
yu gang » xu gang, yi gang, yu fang
yun yu » lun yu

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 dan) OR (wang yang))) OR (wang yidan)) yun yu gang yang yin yang (hai OR hadi) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((wang dan) OR (wang yang))) or (wang yidan)) yun yu gang yang yin yang (hai or hadi) ;~".
• Adding a wildcard symbol may retrieve word variants: ((((wang dan) OR (wang yang))) or (wang yidan)) yun yu gang yang yin yang (hai or hadi) ;*.