Perhaps you should try some spelling variations:
oral communication » personal communication
does development » dams development, ides development, smes development
variation uber » variationen uber, variation bei, variation der
development en » developpement en, development menu, development eco
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
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 die variation uber den oral communication _ does development en afrique.*.