Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
developpement du » developpement de, developpement des, developpement et
a developpement » au developpement, de developpement, le developpement
3 interaction » 2 interaction, 3.2 interaction, 3.1 interaction
technology 3 » technology _, technology 1, technology 4
model tree » model three, model free, model true
du afrique » en afrique, l afrique, de l'afrique
tree 4.2 » trees 4.2, tree 2.2, tree 4.5
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 3 interaction model tree 4.2 communication costs a developpement du afrique.*.