Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
formulation des » formation des, formulacion de, formulation _
technologies a » technologies _, technologies 4, technologies 2
a formulation » la formulation, _ formulation, 3 formulation
barriere et » barriere der, barrieren der, barrieren des
de afrique » de l'afrique, en afrique, l afrique
des does » des doses, der does, des dorfes

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

• Adding a wildcard symbol may retrieve word variants: technologies a formulation des does _ communication barriere et developpement de afrique.*.