Perhaps you should try some spelling variations:
communication mediums » communication medium, communication media, communications media
rural communication » rural communications, oral communication, moral communication
au developpement » du developpement, de developpement, le developpement
developpement en » developpement et, developpement des, developpement de
variation der » variation des, variation bei, variation _
mediums au » mediums a, medias au, mediums _
den rural » do rural, modern rural
der den » oder den, der de, der der

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

• Adding a wildcard symbol may retrieve word variants: typology _ variation der den rural communication mediums au developpement en afrique.*.