Perhaps you should try some spelling variations:
mittelbau » mittelbach
mittelbare » unmittelbaren, ermittelbare
unmittelbare » ununmittelbaren, unermittelbare, ermittelbar
ununmittelbaren » unununmittelbarenn, ununermittelbaren, unermittelbarn, unmittelbaren, unmittelbarer, unmittelbarem
mittelbar » ermittelbar
unmittelbar » unermittelbar

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: (((mittelbau OR mittelbare) OR ((mittelbar OR unmittelbare) OR unmittelbar)) OR ununmittelbaren).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((mittelbau or mittelbare) or ((mittelbar OR unmittelbare) or unmittelbar)) or ununmittelbaren)".
• Adding a wildcard symbol may retrieve word variants: (((mittelbau or mittelbare) or ((mittelbar OR unmittelbare) or unmittelbar)) or ununmittelbaren)*.