Perhaps you should try some spelling variations:
mobile communications » mobile communication
communications costs » communication costs, communications _
technologies 2.1 » technologies _, technologies 4, technologies a
information oder » information der, information model, information code
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
2.1 information » 3.1 information
de afrique » de l'afrique, en afrique, l afrique
costs au » costs a, costs amy, costs _

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information oder _ mobile communications costs au developpement de afrique.*.