Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
2.2 communications » 2.2 communication, 4.2 communications, 3.2 communication
technology coal » technology can, technology cost, technology code
coal generation » second generation
a developpement » au developpement, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
generation age » generation rate, generation auer, generation a
age space » angle space, image space, large space
space 2.2 » space 2.1, space 3.2, space 3.3
l afrique » en afrique
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 coal generation age space 2.2 communications costs a developpement l afrique.*.