Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologien des » technologien fur, technologien und, technologies 2
1 communications » 10 communications, 14 communications, 1 communication
des information » des informations, does information, dis information
development ai » development aid, development api, development a
3 development » 2 development
contents 3 » contents 1, contents _, contents i
ai africa » ii africa, can africa, 1 africa
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologien des information contents 3 1 communications costs 3 development ai africa.*.