Perhaps you should try some spelling variations:
oral communication » personal communication
does developpement » de developpement, des developpements, does development
developpement en » developpement et, developpement des, developpement de
variation oder » variation der, variation over, variation des
typologie 2 » topologie 2, typologies _, typologie et
2 variation » 2 variations
oder den » oder der, wider den, uber den
den oral » den ort, new 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 2 variation oder den oral communication a does developpement en afrique.*.