Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
de developpement » sme development
developpement de » developpement des, developpement durable
formulation des » formation des, formulacion de, formulation _
a communication » la communication, data communication, data communications
barriere de » barriere der, barrieren der, barrieren des
de afrique » de l'afrique, en afrique, l afrique
des does » des doses, der does, des dorfes
does a » does _

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

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