Perhaps you should try some spelling variations:
technologies case » technologies based, technologies can, technologies create
case formulation » basic formulation, chain formulation, space formulation
de communication » mobile communication, online communication
de developpement » sme development
developpement de » developpement des, developpement durable
voies de » does de
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 case formulation _ voies de communication a de developpement de l'afrique.*.