Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
3.2 communication » 3 communication, 2.3 communication, de communication
developpement en » developpement et, developpement des, developpement de
technology lato » technology labor, technology law, technology land
lato infection » plant infection, site infection, tb infection
infection data » infection rate, infection rates, section data
data source » data sources
source 3.2 » sources 3.2, source 2.2, source 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology lato infection data source 3.2 communication _ leur developpement en afrique.*.