Perhaps you should try some spelling variations:
transfer simulation » transfer simulations, transport simulation, transport simulations
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
simulation der » simulation des, simulation _, simulation 4
der prices » user prices, debt prices, do prices
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 transfer simulation der prices _ communication costs 4 developpement l afrique.*.