Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologien series » technologies series, technology series, technologies varies
information centers » information contents, information officers
series information » business information
et communications » et communication, et communicatione, 10 communications
developing urban » development urban, developing human, developing areas
a developing » a development
urban africa » urban area
centers a » centers _, center a, enters a
costs a » costs _, costs 4
a et » a set, a net, a bet

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

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