Perhaps you should try some spelling variations:
2.7 communication » 2.3 communication, 3.2 communication, 2 communication
de developpement » sme development
developpement de » developpement des, developpement durable
information c2 » information c, information 1.2, information can
technology 2 » technology _, technology 1, technology 3
de afrique » de l'afrique, en afrique, l afrique
noise 2.7 » noise 2.3, noise 3.3, noise 3.5
c2 noise » _ noise, 14 noise, 5 noise
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology 2 information c2 noise 2.7 communication costs de developpement de afrique.*.