Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
3 interactions » 3 interaction, 4 interactions, 3.3 interactions
interactions a » interactions _, interactions 4, interactions among
technology 3 » technology _, technology 1, technology 4
problem 2.7 » problem 2.1, problem 2.2, problem 2.3
a problem » das problem
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 3 interactions a problem 2.7 communication costs 4 developpement l afrique.*.