Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.2 communications » 3.2 communication, 3.1 communications, 4.2 communications
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
4 integration » 3 integration, 2 integration, 4.1 integration
technology 4 » technology _, technology 1, technology 3
travel 3.2 » travel 2.2, travel 3.4, travel 3.7
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 integration 3 travel 3.2 communications costs a developpement de afrique.*.