Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
technology energy » technology early, technology emerging, technology experts
energy infection » early infection, energy detection, energy section
infection alerts » infectious agents, infection rates, infective agents
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
alerts spaces » papers spaces
spaces de » espaces de, spaces _, spaces 3

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

• Adding a wildcard symbol may retrieve word variants: technology energy infection alerts spaces de communication a leur developpement en afrique.*.