Perhaps you should try some spelling variations:
2.1 informationsgehalt » 5.1 informationsgehalt, der informationsgehalt, 4 informationsgehalt
informationsgehalt 1.3 » informationsgehalt 1.2, informationsgehalt 2.3, informationsgehalt 3.3
technologies 2.1 » technologies _, technologies 4, technologies a
developing a » developing _
a mobile » _ mobile
a access » 2 access, 3 access, 4 access
1.3 a » 1.3 _, 2.3 a, 1.1 a

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 informationsgehalt 1.3 a mobile communication costs _ developing a access.*.