Perhaps you should try some spelling variations:
data communication » data communications
developpement de » developpement des, developpement durable
typologien die » typologien der, typologie des, typologie der
die variation » de variation, does variation, der variation
de afrique » de l'afrique, en afrique, l afrique
ties data » studies data
a set » _ set
a et » a net, a bet, a jet

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: "typologien die variation _ ties data communication ((a et) OR (a set)) developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologien die variation _ ties data communication ((a et) OR (a set)) developpement de afrique.*.