Perhaps you should try some spelling variations:
une communication » d'une communication, ante communication, de communication
technology early » technology energy, technology era, technology enabled
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
early infection » early detection, early reflections, early information
infection cited » infection sites, infection rates, infection rate
essais une » essais de, essais die, essays und
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 early infection cited essais une communication a de developpement en afrique.*.