Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
information centers » information contents, information officers
technologien aids » technologien als, technologien ad, technologien des
et communications » et communication, et communicatione, 10 communications
aids information » chandos information, series information
developing urban » development urban, developing human, developing areas
14 developing » 4 developing, 1 developing, 10 developing
urban africa » urban area
costs 14 » costs 4, costs 1, costs 11.4

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

• Adding a wildcard symbol may retrieve word variants: technologien aids information centers _ et communications costs 14 developing urban africa.*.