Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
ii interactions » iii interactions, ii interaction, i interactions
4 developpement » de developpement, le developpement, et developpement
developpement l » developpement il, developpement la, developpement de
interactions a » interactions _, interactions 4, interactions among
technology ii » technology ict, technology 1, technology 3
problems 2.7 » problems 2.2, problems 2.4, problems 2.3
a problems » a problem, 2 problems, 3 problems
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 ii interactions a problems 2.7 communication costs 4 developpement l afrique.*.