Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpements de » developpement de, developpement des, developpement du
variation among » starvation among, formation among, variation von
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
ers personal » era personal, der personal, das personal
de afrique » de l'afrique, en afrique, l afrique
among ers » among peers, among users, among east

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation among ers personal communication media _ developpements de afrique.*.