Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologien als » technologien des, technologien fur, technologien und
de communication » mobile communication, online communication
als information » als informations, aids information, laws information
12 developing » 1.2 developing, 2 developing, 1 developing
developing a » developing _
centers 3.1 » center 3.1, centers 3.3, centers 3.8
a africa » 1 africa, can africa, em africa
cost 12 » cost 1.2, cost 15, cost 3.2
3.1 de » 3.1 die, 3.1 der, 3.1 def

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

• Adding a wildcard symbol may retrieve word variants: technologien als information centers 3.1 de communication cost 12 developing a africa.*.