Perhaps you should try some spelling variations:
communication network » communication networks, communications network, communications networks
development urban » development bank, development band, development update
information need » information needs, information needed, information speed
3 information » 1 information
technology 3 » technology _, technology 1, technology 4
urban africa » urban area
de mobile » die mobile, e mobile, does mobile
network a » network _, network 3, network 1
need de » need le, need fide, need one

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

• Adding a wildcard symbol may retrieve word variants: technology 3 information need de mobile communication network a development urban africa.*.