Perhaps you should try some spelling variations:
voice communications » mobile communications, guinea communications, online communications
communications costs » communication costs, communications _
technologies dans » technologies can, technologies any, technologies daf
information needs » information networks
dans information » dns information, dis information, does information
au developpement » du developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
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 dans information needs _ voice communications costs au developpement l afrique.*.