Perhaps you should try some spelling variations:
mittelbar » mittelbare, unmittelbar, ermittelbar
unermittelbaree » unermittelbareee, unerunmittelbaree, unerermittelbaree, unvermittelbare, unmittelbare, unmittelbaren
unmittelbareee » unmittelbareeee, ununmittelbareee, unermittelbareee, unmittelbare, unmittelbaren, unmittelbarer

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 ((unermittelbaree OR unmittelbareee) OR unmittelbareee)).
• Adding a wildcard symbol may retrieve word variants: (mittelbar or ((unermittelbaree or unmittelbareee) or unmittelbareee))*.