Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologien aids » technologien als, technologien ad, technologien des
information 4.3.3 » information 3.3, information 4.2, information 1.5.2
aids information » chandos information, series information
3 developing » 3 development
developing e » developing _, developing a, developing east
e access » 2 access, 3 access, 4 access
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information 4.3.3 _ mobile communications costs 3 developing e access.*.