Perhaps you should try some spelling variations:
based interaction » based interactive, based instruction, based interventions
interaction fibre » interaction figure, interaction fiber, interaction aware
de developpement » sme development
developpement de » developpement des, developpement durable
2 communication » 3 communication, 4 communication, 1 communication
de afrique » de l'afrique, en afrique, l afrique
costs de » costs _, costs 4, costs a
optic 2 » optics 22, optics 28, optics _

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

• Adding a wildcard symbol may retrieve word variants: technology based interaction fibre optic 2 communication costs de developpement de afrique.*.