Perhaps you should try some spelling variations:
information centers » information contents, information officers
data communication » data communications
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
des information » des informations, does information, dis information
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
centers world » century world, centers hold, century worlds
cost 3.2 » cost 2.4

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

• Adding a wildcard symbol may retrieve word variants: technologien des information centers world data communication cost 3.2 developing _ africa.*.