Perhaps you should try some spelling variations:
a communications » a communication, data communications, a communicative
de developpement » sme development
developpement et » developpement des, developpement de, development east
des variation » does variation, de variation, der variation
et afrique » en afrique, l afrique
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 ((4 does) OR (2 does)) a communications _ de developpement et afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variation ((4 does) OR (2 does)) a communications _ de developpement et afrique.*.