Perhaps you should try some spelling variations:
oral communication » personal communication
variationen uber » variationen der, variationen des, variationen und
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
von variationen » von variation, von narrationen, 03 variationen
typologie von » typologie des, typologie der
uber den » uber die
den oral » den ort, new oral
a de » a die, a der, a des

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

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