Perhaps you should try some spelling variations:
personal communication » interpersonal communication
does developpement » de developpement, des developpements, does development
typologie based » typology based, ontologies based
based variation » based validation, based valuation, based vaccination
developpement l » developpement il, developpement la, developpement de
variation oder » variation der, variation over, variation des
den personal » der personal, de personal, des personal
l afrique » en afrique
oder den » oder der, wider den, uber den

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

• Adding a wildcard symbol may retrieve word variants: typologie based variation oder den personal communication _ does developpement l afrique.*.