Perhaps you should try some spelling variations:
data communication » data communications
developpement de » developpement des, developpement durable
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
variation 6 » variation _, variations _, variation des
costs data » cost data
6 costs » 3 costs, 4 costs, 6 cost

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation 6 costs data communication media _ developpement de l'afrique.*.