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
technologies co » technologies _, technologies 4, technologies 2
formulation des » formation des, formulacion de, formulation _
4 communication » 3 communication, 5.4 communication, de communication
co formulation » _ formulation, 3 formulation, 2 formulation
barriere leur » barriere der, barriers learn, barrieren der
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 co formulation des does 4 communication barriere leur developpement en afrique.*.