Perhaps you should try some spelling variations:
set developpements » et developpements, et developpement, des developpements
3.2 communication » 3 communication, 2.3 communication, de communication
developpements l » developpements de, developpement il, developpement la
parks infection » virus infection, early infection, pain infection
communication 3 » communication _, communication a
infection data » infection rate, infection rates, section data
data scarce » data source, data sparse, data sources
scarce 3.2 » source 3.2, scale 3.2
l afrique » en afrique
3 set » _ set, a set, 2 set

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

• Adding a wildcard symbol may retrieve word variants: technology parks infection data scarce 3.2 communication 3 set developpements l afrique.*.