Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
u.s communications » 3.1 communications, les communications, nps communications
technology change » technological change, technological changes
change simulation » change simulations, channel simulation, change population
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
based cases » based causes, based case, based care
cases u.s » crises u.s, cases 3.3, cases 2.2
l afrique » en afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology change simulation based cases u.s communications costs 4 developpement l afrique.*.