Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
4 communication » 3 communication, 5.4 communication, de communication
technologies 4 » technologies _
formation des » formation _
barriere leur » barriere der, barriers learn, barrieren der
4 formation » 1 formation, a formation, 4 formulation
des does » des doses, der does, des dorfes
does 4 » does _, does a, does e

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 formation des does 4 communication barriere leur developpement en afrique.*.