Perhaps you should try some spelling variations:
wang yidan » wang yan
wang dan » wang yan, wang ban, wang yang
dan yang » daun yang, tan yang, wang yang
yan yun » yan yuan, yang yun, yan kun
yun dan » yun jang
yang yi » yang di, yang xi, yang jui
yi gang » ii gang, i gang, li gang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang dan) OR (wang yidan)) yan yun dan yang yi gang (hai or hadi) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang dan) OR (wang yidan)) yan yun dan yang yi gang (hai OR hadi) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang dan) OR (wang yidan)) yan yun dan yang yi gang (hai or hadi) ;*".