Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change simulation » change simulations, channel simulation, change population
simulation rates » simulation states, simulation cases, simulations notes
19 communication » 1 communication, 10 communication, 9 communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
rates hans » rates have
costs de » costs _, costs 4, costs a
hans 19 » hans 1963, hans 1900, hans 1891

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

• Adding a wildcard symbol may retrieve word variants: technology change simulation rates hans 19 communication costs de developpement en afrique.*.