Perhaps you should try some spelling variations:
yang yang » wang yang, wang yan
yan liang » yang liang, wang liang, yan wang
you liang » you xian, you liangzhi
zheng yun » zheng yu, zheng quan, zheng xuan
yang yue » wang yue, yang yun, yang jui
wie yin » wie ein, wie eine, wie sind
yang yu » yang yun, yang yi, sang 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 ((((yang yang) OR (yan liang))) OR (you liang)) wie yin ((yang yu) OR (yang yue)) zheng yun ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang ((((yang yang) or (yan liang))) or (you liang)) wie yin ((yang yu) OR (yang yue)) zheng yun ;~".
• Adding a wildcard symbol may retrieve word variants: wang ((((yang yang) or (yan liang))) or (you liang)) wie yin ((yang yu) OR (yang yue)) zheng yun ;*.