Perhaps you should try some spelling variations:
technology change » technological change, technological changes
change simulation » change simulations, channel simulation, change population
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
based case » based care, base case, based phase
la afrique » l afrique, la fabrique, en afrique
case 1.1 » case 14.1, cases 1.1, case 13.1
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: technology change simulation based case 1.1 communication costs 4 developpement la afrique.*.