Perhaps you should try some spelling variations:
person communication » personal communication, personal communications, irsn communication
developpement de » developpement des, developpement durable
variation bei » variation des, variation der, variation _
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
der person » per person, der personen, older persons
a le » a les, a l, a e

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie de variation bei der person communication ((a le) OR (a la)) developpement de l'afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variation bei der person communication ((a le) OR (a la)) developpement de l'afrique.*.