Perhaps you should try some spelling variations:
personen communication » personal communication, personal communications, prone communication
leur developpement » le developpement, deux developpements, de developpement
developpement en » developpement et, developpement des, developpement de
typologie its » typologie des, typologie et, typologie cices
its variation » its variations, does variation, les variations
variation des » variation _, variation 6, variation series
ddr personen » der personen, fur personen, des personen
des ddr » der ddr, des dr, dem ddr

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

• Adding a wildcard symbol may retrieve word variants: typologie its variation des ddr personen communication a leur developpement en afrique.*.