Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologies aids » technologies varies, technologies a, technologies de
aids information » chandos information, series information
information 2 » information 3
24 developing » 4 developing, 2 developing, 14 developing
costs 24 » costs 2.4, costs 4, costs 20
2 und » _ und, i und

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

• Adding a wildcard symbol may retrieve word variants: technologies aids information 2 und mobile communications costs 24 developing _ areas.*.