Perhaps you should try some spelling variations:
communications series » communication series, communications services, communication services
a developpement » au developpement, de developpement, le developpement
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
variation a » variation _, variation 6, variation 5
des afrique » en afrique, de l'afrique
costs data » cost data
series a » series _, series 1, series 2
a costs » a cost, 3 costs, 4 costs

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

• Adding a wildcard symbol may retrieve word variants: typology der variation a costs data communications series a developpement des afrique.*.