Perhaps you should try some spelling variations:
mittelbar » unmittelbar
ermittelbar » erunmittelbar, unmittelbar
unmittelbaree » ununmittelbaree, unmittelbaren, unmittelbarem, unmittelbares, ununmittelbarene, unmittelbare
unmittelbarer » ununmittelbarer, unmittelbaren, unmittelbar, ununmittelbarenr, unmittelbarr
mittelbare » unmittelbare, unmittelbaren
unmittelbare » ununmittelbare, ununmittelbaren, unmittelbar
mittelbisau » mittelbau, mittelbis

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