Perhaps you should try some spelling variations:
du developpement » de developpement, le developpement, et developpement
developpement de » developpement des, developpement durable
der variation » de variation, does variation, die variation
variation did » variation des, variation der, variation im
typology der » typologie der, typologien der, typologie des
de afrique » de l'afrique, en afrique, l afrique
geo data » eo data, two data
do data » eo data, go data, two data

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: "typology der variation did ((do data) OR (geo data)) communications _ du developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology der variation did ((do data) OR (geo data)) communications _ du developpement de afrique.*.