Perhaps you should try some spelling variations:
communication data » communication 3, communication 1, communication 3.3
information costs » information contents, information centers, information content
technologies key » technologies any, technologies know, technologies _
et developpement » de developpement, le developpement, test development
key information » energy information
des afrique » en afrique, de l'afrique
data et » data e, data el, data en

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

• Adding a wildcard symbol may retrieve word variants: technologies key information costs _ risk communication data et developpement des afrique.*.