Perhaps you should try some spelling variations:
communications series » communication series, communications services, communication services
developpement en » developpement et, developpement des, developpement de
3 developpement » de developpement, le developpement, et developpement
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation 6 » variation _, variations _, variation des
series 3 » series 63, series _, series 1
6 cases » 6 causes, 6 case, 4 cases

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation 6 cases data communications series 3 developpement en afrique.*.