Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
information banken » information bank, information banks, information based
technologien 1 » technologies 1, technologien _, technologien 4
4 developing » 3 developing
banken den » banken wenn, banken bei, banken die
den mobile » does mobile, open mobile, non mobile
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: technologien 1 information banken den mobile communications costs 4 developing _ areas.*.