Perhaps you should try some spelling variations:
communication model » communication media
development effect » development efforts, development project, development east
information need » information needs, information needed, information speed
de communication » mobile communication, online communication
technologies 1 » technologies _, technologies 4, technologies 2
need one » need more, need only
model 2 » model 1, model 2.2, model 2.1
one de » one die, one do, one demo

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information need one de communication model 2 development effect afrique.*.