Perhaps you should try some spelling variations:
ying yang » yang yang, ying chang, wang yang
yin yang » yi yang, yin fang, yin hang
wei chen » frei chen, jui chen, yi chen
wei shen » kwei sheng, enwei shen, wei shang
yang jie » yang jin, yang di, yang jui
yang yi » yang di, yang xi, yang jui
hai » hadi, haji, hari

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan ((yin yang) or (ying yang)) ((wei chen) OR (wei shen)) ((yang jie) or (yang yi)) dang hai ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wan ((yin yang) OR (ying yang)) ((wei chen) OR (wei shen)) ((yang jie) OR (yang yi)) dang hai ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan ((yin yang) or (ying yang)) ((wei chen) OR (wei shen)) ((yang jie) or (yang yi)) dang hai ;".
• Adding a wildcard symbol may retrieve word variants: wan ((yin yang) or (ying yang)) ((wei chen) OR (wei shen)) ((yang jie) or (yang yi)) dang hai ;*.