Perhaps you should try some spelling variations:
oral communication » personal communication
des developpement » des developpements, de developpement, le developpement
variation cover » variation over, variation der, variation notes
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
des afrique » en afrique, de l'afrique
cover die » cover i, cover indice
die oral » die moral, die orte
a des » a der, a das

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

• Adding a wildcard symbol may retrieve word variants: typologie die variation cover die oral communication a des developpement des afrique.*.