Perhaps you should try some spelling variations:
personal communication » interpersonal communication
does developpement » de developpement, des developpements, does development
variation series » education series, action series, edition series
developpement en » developpement et, developpement des, developpement de
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
1 personal » a personal, 4 personal, 1945 personal
series 1 » series _

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

• Adding a wildcard symbol may retrieve word variants: typologie die variation series 1 personal communication _ does developpement en afrique.*.