Perhaps you should try some spelling variations:
does developpement » de developpement, des developpements, does development
oral communication » personal communication
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
des afrique » en afrique, de l'afrique
us oral » u.s oral, vs oral
a does » 2 does, 4 does, 1 does

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation des us oral communication a does developpement des afrique.*.