Perhaps you should try some spelling variations:
rural communication » rural communications, oral communication, moral communication
dam developpement » de developpement, du developpement, au developpement
developpement en » developpement et, developpement des, developpement de
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
typology des » typologie des, typologie der, typology _
first rural » firm rural, firms rural, first real
des first » its first, his first, vs first

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

• Adding a wildcard symbol may retrieve word variants: typology des variation des first rural communication _ dam developpement en afrique.*.