Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
variation uber » variationen uber, variation bei, variation der
typologie 4 » topologie 4, typologies _, typologie et
4 variation » 2 variation, 4 validation
uber den » uber die
den oral » den ort, new oral

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

• Adding a wildcard symbol may retrieve word variants: typologie 4 variation uber den oral communication _ de developpement en afrique.*.