Perhaps you should try some spelling variations:
information centers » information contents, information officers
communication cost » communication costs, communication costa, communications costs
eu communication » ec communication, et communication, de communication
developing urban » development urban, developing human, developing areas
technologien ad » technologien am, technologien und, technologien als
ad information » d information, nd information, od information
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
urban africa » urban area
centers ohc » centers ihc, centers hold

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

• Adding a wildcard symbol may retrieve word variants: technologien ad information centers ohc eu communication cost 2.4 developing urban africa.*.