Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
technologien des » technologien fur, technologien und, technologies 2
eu communication » ec communication, et communication, de communication
developing urban » development urban, developing human, developing areas
des information » des informations, does information, dis information
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
centers he » centers help, centers ihc, centers ohc
urban area » urban areas
cost 2.2 » costs 2.2, cost 2.4, cost 3.2

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 he eu communication cost 2.2 developing urban area.*.