Perhaps you should try some spelling variations:
oral communication » personal communication
de developpement » sme development
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
variation der » variation des, variation bei, variation _
typology des » typologie des, typologie der, typology _
die oral » die moral, die orte
der die » oder die, der dinge, wider die

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

• Adding a wildcard symbol may retrieve word variants: typology des variation der die oral communication _ de developpement de l'afrique.*.