Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication 2.1 » communication 22.1, communications 2.1, communication 2.4
do developpement » de developpement, du developpement, le developpement
developpement en » developpement et, developpement des, developpement de
roles personal » roles persons, names personal, loans personal
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
2.1 do » 2.1 de

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation _ roles personal communication 2.1 do developpement en afrique.*.