Perhaps you should try some spelling variations:
experimentiern » experimentiert, experimentiere, experimentierens, experimentiertn, experimentingn, experimentisn
experimentier » experimentiert, experimenting, experimentis
experimentieren » experimentierten, experimentingen, experimentisen

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