Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
typologie based » typology based, ontologies based
based variation » based validation, based valuation, based vaccination
variation oder » variation der, variation over, variation des
de persona » de personal, de personas, die persona
oder de » oder die, oder der, oder den
a et » a set, a net, a bet

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 de persona communication a et developpement de l'afrique.*.