Perhaps you should try some spelling variations:
unmittelbare » unmittelbar, unmittelbaree, ununmittelbare
ununmittelbare » ununmittelbar, unvermittelbare, unmittelbar, unmittelbaren, ununmittelbaree, unununmittelbare
ermittelbar » unmittelbar, ermittelbare, erunmittelbar
ermittelbare » unmittelbare, mittelbare, vermittelbar, unmittelbaren, ermittelbaree, erunmittelbare
mittelbar » mittelbare, unmittelbar

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: (((unmittelbare OR ununmittelbare) OR (ermittelbar OR ermittelbare)) OR mittelbar)*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((unmittelbare OR ununmittelbare) or (ermittelbar or ermittelbare)) or mittelbar)*".