Perhaps you should try some spelling variations:
oral communication » personal communication
variation ending » variation using, variations during, variation und
el developpement » et developpement, en developpement, et developpements
developpement de » developpement des, developpement durable
typologien de » typologien der, typologie des, typologie der
de variation » der variation, die variation, does variation
debate oral » debate moral, debat moral, debate global

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

• Adding a wildcard symbol may retrieve word variants: typologien de variation ending debate oral communication _ el developpement de l'afrique.*.