Perhaps you should try some spelling variations:
ruralen communication » rural communications, rural telecommunication, oral communication
communication series » communication services, communication systems, communication skills
transformation a » transformation _
c developpement » de developpement, le developpement, et developpement
der ruralen » der pluralen, der realen, der dualen
des africa » does africa, yes africa, de africa
series c » series _, series 1, series 2
a der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: technologies _ transformation a der ruralen communication series c developpement des africa.*.