Perhaps you should try some spelling variations:
optical communication » optical communications, optic communication, political communication
technologies based » technologies used, technology based, technologies a
based information » basic information, based innovation, land information
information needs » information networks
die developpement » de developpement, le developpement, du developpement
developpement la » developpement de, developpement et, developpement du
la afrique » l afrique, la fabrique, en afrique
a die » 2 die, 3 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: technologies based information needs _ optical communication a die developpement la afrique.*.