Perhaps you should try some spelling variations:
data communication » data communications
des variation » does variation, de variation, der variation
des afrique » en afrique, de l'afrique
und data » fund data, wind data, und daten
a aus » _ aus, a auf, i aus
a au » a auf, a bau, a a
typologie » typologies, typology

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: "typologie des variation _ und data communication ((a au) OR (a aus)) developpement des afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation _ und data communication ((a au) OR (a aus)) developpement des afrique.*.