Perhaps you should try some spelling variations:
data communication » data communications
developpement de » developpement des, developpement durable
communication 3 » communication _, communication a
a developpement » au developpement, de developpement, le developpement
des variation » does variation, de variation, der variation
variation 6 » variation _, variations _, variation des
de afrique » de l'afrique, en afrique, l afrique
6 forest » a forest

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "(typologie OR typologies) des variation 6 forest data communication 3 a developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: (typologie OR typologies) des variation 6 forest data communication 3 a developpement de afrique.*.