Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
a developing » a development
developing a » developing _
a across » 19 across, eu across, ct across
2.5.2 e » 2.5.2 de, 2.5.2 we, 2.5.2 a
costs a » costs _, costs 4

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "technologien ad information ((2.5.2 e) OR (2.5.2 _)) de communication costs a developing a across.~".
• Adding a wildcard symbol may retrieve word variants: technologien ad information ((2.5.2 e) OR (2.5.2 _)) de communication costs a developing a across.*.