Perhaps you should try some spelling variations:
oral communication » personal communication
does developpement » de developpement, des developpements, does development
ontologies based » ontology based, colonies based, ontologies a
based variation » based validation, based valuation, based vaccination
developpement l » developpement il, developpement la, developpement de
variation oder » variation der, variation over, variation des
l afrique » en afrique
oder new » order new, der new, over new
new oral » new moral, knew moral, new rural

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

• Adding a wildcard symbol may retrieve word variants: ontologies based variation oder new oral communication _ does developpement l afrique.*.