Perhaps you should try some spelling variations:
developpement durable » developpement de
communications rc » communications tec, communications _, communications a
et developpement » de developpement, le developpement, test development
typologies der » typologie der, typologien der, typologie des
der variation » de variation, does variation, die variation
per data » power data, poor data, user data

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

• Adding a wildcard symbol may retrieve word variants: typologies der variation _ per data communications rc et developpement durable l'afrique.*.