Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
developpement de » developpement des, developpement durable
4.1 integration » 3.3 integration, 4 integration, 3 integration
a developpement » au developpement, de developpement, le developpement
technology 4.1 » technology 3.1, technology 2.1, technology 1
travel 4.2 » travel 2.2, travel 4.4, travel 4.5
de afrique » de l'afrique, en afrique, l afrique
3 travel » _ travel, a travel, 7 travel
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 integration 3 travel 4.2 communications costs a developpement de afrique.*.