Perhaps you should try some spelling variations:
ying yang » yin yang, ying chang, wang yang
yang yang » wang yang, wang yan
kang chen » chang chen, jane chen, tang chun
yang jui » yang judy, yang di, yang yi
kang han » kong hang, zhang han, dang hai
jie gan » size gan
yang xi » yang di, yang yi

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang ((ying yang) OR (yang yang)) jie gan ((yang xi) or (yang jui)) ((kang han) or (kang chen)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang ((ying yang) OR (yang yang)) jie gan ((yang xi) OR (yang jui)) ((kang han) OR (kang chen)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((ying yang) OR (yang yang)) jie gan ((yang xi) or (yang jui)) ((kang han) or (kang chen)) ;*".