Perhaps you should try some spelling variations:
data communication » data communications
formulation over » formation over, formulation model, formulation where
de developpement » sme development
developpement de » developpement des, developpement durable
technologies 4 » technologies _
4 formulation » _ formulation, 3 formulation, 2 formulation
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 formulation over _ data communication a de developpement de l'afrique.*.