Perhaps you should try some spelling variations:
personalen communication » personal communication, personal communications, personal communicator
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
der personalen » der personen, der regionalen
typologie its » typologie des, typologie et, typologie cices
its variation » its variations, does variation, les variations

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

• Adding a wildcard symbol may retrieve word variants: typologie its variation _ der personalen communication a leur developpement en afrique.*.