Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
generation age » generation rate, generation auer, generation a
technology co » technology cost, technology code, technology can
co generation » coal generation, code generation, a generation
age space » angle space, image space, large space
space 6.2 » spaces 6.2, space 3.2, space 2.2
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 co generation age space 6.2 communication costs a developpement en afrique.*.