Perhaps you should try some spelling variations:
experimentiern » experimentieren, experimentiert, experimentier
experimentiertn » experimentierten, experimentieren, experimentiert
experimentierte » experimentiert, experimentieren, experimentier

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: ( (experimentiern OR experimentiertn) OR experimentierte ).
• Adding a wildcard symbol may retrieve word variants: ( (experimentiern or experimentiertn) or experimentierte )*.