Perhaps you should try some spelling variations:
data communication » data communications
de developpement » sme development
developpement de » developpement des, developpement durable
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
per data » power data, poor data, user data
a de » a die, a der, a des

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

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