Perhaps you should try some spelling variations:
yanling yang » yang yang, ying yang
der tests » des tests, der trusts, user tests
der test » der text, per test, der texte
kit song » kim song, art song, jie song
wong yue » wang yue, hong yu
rong yu » hong yu, rong su, song yun
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) yanling yang ((der test) or (der tests)) kit song ((rong yu) OR (wong yue)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) yanling yang ((der test) OR (der tests)) kit song ((rong yu) OR (wong yue)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) yanling yang ((der test) or (der tests)) kit song ((rong yu) OR (wong yue)) ;".
• Adding a wildcard symbol may retrieve word variants: (wang or lang) yanling yang ((der test) or (der tests)) kit song ((rong yu) OR (wong yue)) ;*.