Perhaps you should try some spelling variations:
persona communication » personal communication, personal communications, personal communicator
deux developpements » des developpements, de developpement, du developpement
developpements en » developpement en, developpement et, developpements de
des variation » does variation, de variation, der variation
variation der » variation des, variation bei, variation _
de persona » de personal, de personas, die persona
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation der de persona communication a deux developpements en afrique.*.