Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information costs » information contents, information centers, information content
technologie und » technologies 2.1
und information » fund information, road information, award information
differ mobile » die mobile
costs differ » counts differ, cbdcs differ, sets differ
4 developing » 3 developing
developing 2 » developing _, developing a, developing e
2 access » 3 access
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologie und information costs differ mobile communications costs 4 developing 2 access.*.