Perhaps you should try some spelling variations:
personal communication » interpersonal communication
de developpement » sme development
developpement de » developpement des, developpement durable
typologien does » typologie des, typologien der, typologie der
does variation » de variation, der variation, die variation
variation bei » variation des, variation der, variation _
der personal » der personalen, der personen, der person

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

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