Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
transfer simulation » transfer simulations, transport simulation, transport simulations
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
simulation des » simulation _, simulation 4, simulation 3
des use » des us, des usa, des uber
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology transfer simulation des use data communications costs a developpement en afrique.*.