Perhaps you should try some spelling variations:
wang yidan » wang yan
yidan jing » bian jing
gain yang » dan yang, daun yang, tan yang
tan yong » tan hong, tan kong, tan yang
yang hui » yang jui, wang hui, yang muxi
jing ji » ying jin
yi yang » yin yang, yi gang, yu yang

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 jing ji ((gain yang) or (tan yong)) yi yang hui ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yidan jing ji ((gain yang) OR (tan yong)) yi yang hui ;.
• Adding a wildcard symbol may retrieve word variants: wang yidan jing ji ((gain yang) or (tan yong)) yi yang hui ;*.