Perhaps you should try some spelling variations:
yang yang » wang yan
wang yang » wang yan, wang liang, wang yanling
out test » about test, root test, post test
out west » ost west, south west, out what
yang lin » yang jin, wang lin, yang liang
wong yue » wang yue, hong yu
yang li » yang di, yang xi, yang yi

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: ((yang yang) OR (wang yang)) wang ((out test) OR (out west)) ((yang lin) OR (yang li)) wong yue ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (wang yang)) wang ((out test) or (out west)) ((yang lin) OR (yang li)) wong yue ;~".
• Adding a wildcard symbol may retrieve word variants: ((yang yang) or (wang yang)) wang ((out test) or (out west)) ((yang lin) OR (yang li)) wong yue ;*.