Perhaps you should try some spelling variations:
oral communication » personal communication
does developpement » de developpement, des developpements, does development
developpement l » developpement il, developpement la, developpement de
variation des » variation _, variation 6, variation series
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
l afrique » en afrique
u.s oral » u.s oil
des u.s » des us, der u.s

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 u.s oral communication _ does developpement l afrique.*.