Perhaps you should try some spelling variations:
technologies based » technologies used, technology based, technologies a
cell communication » cell communications, oral communication, verbal communication
based information » basic information, based innovation, land information
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
information a » information age, information about
des cell » does cell, es cell, dry cell
a des » a der, a das
a de » a die, a der, _ de

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

• Adding a wildcard symbol may retrieve word variants: technologies based information a des cell communication a de developpement en afrique.*.