Perhaps you should try some spelling variations:
technology across » technology access, technology africa
across simulation » cross simulation, crop simulation, crisis simulation
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
simulation des » simulation _, simulation 4, simulation 3
developing egg » developing e, developing eq, developing east
3 developing » 3 development
egg afrique » en afrique
des case » des coase, des cas, des care
case 4.2 » case 4.1, case 2
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology across simulation des case 4.2 communication costs 3 developing egg afrique.*.