Perhaps you should try some spelling variations:
csr communication » de communication, 3 communication, 4 communication
developpement de » developpement des, developpement durable
des variation » does variation, de variation, der variation
de afrique » de l'afrique, en afrique, l afrique
der csr » does csr
a der » 2 der, 3 der, 1 der
a de » a die, a des, _ de
typologie » typologies, typology

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typologie des variation _ der csr communication ((a de) OR (a der)) developpement de afrique.~.
• Adding a wildcard symbol may retrieve word variants: typologie des variation _ der csr communication ((a de) or (a der)) developpement de afrique.*.