Perhaps you should try some spelling variations:
mittelbar » mittelbare, unmittelbar
ermittelbar » ermittelbare, erunmittelbar, unmittelbar
unununmittelbareee » unununmittelbareeee, ununununmittelbareee, unununmittelbaree
unununmittelbaree » unununmittelbareee, ununununmittelbaree, unununmittelbare
unmittelbareer » unmittelbareeer, ununmittelbareer, unmittelbarer, unmittelbareren, unmittelbaren
unmittelbare » unmittelbaree, ununmittelbare, 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: ((mittelbar OR (ermittelbar OR ((unununmittelbareee OR unununmittelbaree) OR unmittelbareer))) OR unmittelbare).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mittelbar or (ermittelbar or ((unununmittelbareee OR unununmittelbaree) or unmittelbareer))) or unmittelbare)".
• Adding a wildcard symbol may retrieve word variants: ((mittelbar or (ermittelbar or ((unununmittelbareee OR unununmittelbaree) or unmittelbareer))) or unmittelbare)*.