Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information center » information centers, information centre, information content
technologien als » technologien des, technologien fur, technologien und
2 communications » 2 communication, 3 communications, 4 communications
als information » als informations, aids information, laws information
developing ai » developing a, developing av, developing asia
4 developing » 3 developing
ai africa » ii africa, can africa, 1 africa
center 1 » center _, center a, center 2.1
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 als information center 1 2 communications costs 4 developing ai africa.*.