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
typologie price » typologie cices
price variation » price variations
der personalen » der personen, der regionalen

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

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