Perhaps you should try some spelling variations:
invocation migrants » introduction migrants
culture invocation » culture information, culture innovations, culture incubation
de communication » mobile communication, online communication
de developpement » sme development
developpement du » developpement de, developpement des, developpement et
migrants a » migrants _
du afrique » en afrique, l afrique, de l'afrique
costs de » costs _, costs 4, costs a
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: technology culture invocation migrants a de communication costs de developpement du afrique.*.