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
de developpement » sme development
developpement la » developpement de, developpement et, developpement du
la afrique » l afrique, la fabrique, en afrique
a de » a die, a der, a des

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 de developpement la afrique.*.