Perhaps you should try some spelling variations:
model communication » modern communication, moral communication, modeling communication
gas developpement » gas development, au developpement, des developpements
developpement en » developpement et, developpement des, developpement de
communication 3 » communication _, communication a
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 4 » variations 4, variation _, variation 6
4 models » 4 model, 2 models, 3 models
3 gas » _ gas, 2 gas

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation 4 models model communication 3 gas developpement en afrique.*.