Perhaps you should try some spelling variations:
communications series » communication series, communications services, communication services
die variation » de variation, does variation, der variation
typology die » typology _, typology 4.1, typology 6
variation 5 » variation _, variation 6, variation a
des afrique » en afrique, de l'afrique
costs data » cost data
5 costs » 3 costs, 4 costs, 5 cost

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

• Adding a wildcard symbol may retrieve word variants: typology die variation 5 costs data communications series _ developpement des afrique.*.