Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologien does » technologien des, technologien als, technologie de
information 1.5.2 » information 1.2, information 2
does information » des informations, dis information, users information
developing a » developing _
5 mobile » 5g mobile, _ mobile, a mobile
a access » 2 access, 3 access, 4 access
1.5.2 5 » 1.5.2 _, 1.5.2 a

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

• Adding a wildcard symbol may retrieve word variants: technologien does information 1.5.2 5 mobile communications costs _ developing a access.*.