Perhaps you should try some spelling variations:
mittelbar » mittelbare, unmittelbar, ermittelbar
ermittelbare » ermittelbaree, erunmittelbare, erermittelbare, ermittelbar, mittelbare, vermittelbar
ermittelbaren » ermittelbareen, erunmittelbaren, erermittelbaren, ermittelbarn, mittelbaren, vermittelbarn, ermittelbar, unmittelbaren
vermittelbarn » vermittelbaren, verunmittelbarn, verermittelbarn, vermittelbar, vermittelbare, ermittelbar
unmittelbare » unmittelbaree, ununmittelbare, unermittelbare, unmittelbar, ermittelbar
mittelbach » mittelbare

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