Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information center » information centers, information centre, information content
do communications » 10 communications, 14 communications, 2 communications
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
developing can » developing a, developing ai, developing av
center case » centers case, century case, center based
can africa » urban africa
costs 5.4 » costs 4.4, costs 6.4, costs 2.4
case do » case d, case d1, case d2

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

• Adding a wildcard symbol may retrieve word variants: technologien des information center case do communications costs 5.4 developing can africa.*.