Perhaps you should try some spelling variations:
technological changes » technological change, technological advances
changes simulation » change simulation, change simulations, channel simulation
11.4 communication » 1.4 communication, 11.6 communication, 11.4.1 communication
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
la afrique » l afrique, la fabrique, en afrique
care 11.4 » care 11.1, care 1.2, care 10.1
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: technological changes simulation _ care 11.4 communication costs 4 developpement la afrique.*.