Perhaps you should try some spelling variations:
oral communication » personal communication
africa development » african development, american development, physical development
development may » development main, development make, development mali
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
hier oral » einer oral
6 hier » 5 hier, 6 higher

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation 6 hier oral communication _ africa development may afrique.*.