Perhaps you should try some spelling variations:
personal communication » interpersonal communication
developpement de » developpement des, developpement durable
typologien does » typologie des, typologien der, typologie der
a developpement » au developpement, de developpement, le developpement
does variation » de variation, der variation, die variation
de afrique » de l'afrique, en afrique, l afrique
a a » a la

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

• Adding a wildcard symbol may retrieve word variants: typologien does variation _ from personal communication a a developpement de afrique.*.