Perhaps you should try some spelling variations:
voice communication » voice communications, mobile communication, device communication
information needs » information networks
au developpement » du developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
l afrique » en 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 a information needs _ voice communication costs au developpement l afrique.*.