Perhaps you should try some spelling variations:
communications network » communications networks, communication network, communication networks
mobile communications » mobile communication
information costs » information contents, information centers, information content
development aid » development a, development africa, development agenda
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
a mobile » _ mobile
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technologies a information costs a mobile communications network _ development aid afrique.*.