Perhaps you should try some spelling variations:
communication series » communication services, communication systems, communication skills
data communication » data communications
a developpement » au developpement, de developpement, le developpement
die variation » de variation, does variation, der variation
variation des » variation _, variation 6, variation series
typology die » typology _, typology 4.1, typology 6
des afrique » en afrique, de l'afrique
cost data » test data
des cost » des ost, des post, des couts
series a » series _, series 1, series 2

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

• Adding a wildcard symbol may retrieve word variants: typology die variation des cost data communication series a developpement des afrique.*.