Perhaps you should try some spelling variations:
adoption inflation » adoption innovations, adoption integration, adoption implications
de communication » mobile communication, online communication
developpement du » developpement de, developpement des, developpement et
a developpement » au developpement, de developpement, le developpement
targeting a » targeting _, targeting how
du afrique » en afrique, l afrique, de l'afrique
costs a » costs _, costs 4
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 adoption inflation targeting a de communication costs a developpement du afrique.*.