Perhaps you should try some spelling variations:
adoption inflation » adoption innovations, adoption integration, adoption implications
de communication » mobile communication, online communication
developpement de » developpement des, developpement durable
4 developpement » de developpement, le developpement, et developpement
targeting a » targeting _, targeting how
de afrique » de l'afrique, en afrique, l afrique
costs 4 » costs _, costs a, costs 4.2
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 4 developpement de afrique.*.