Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
simulation setup » simulation study, simulation system
de developpement » sme development
technology crop » technology cross, technology europe, technology across
crop simulation » carlo simulation, micro simulation
des afrique » en afrique, de l'afrique
spaces 6.2 » spaces 4.2, spaces 1.1, spaces 2.1

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

• Adding a wildcard symbol may retrieve word variants: technology crop simulation setup spaces 6.2 communication _ de developpement des afrique.*.