Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
rural communications » oral communication, rural telecommunications, cultural communications
traps developpement » trade developement, trap development, trade development
developpement en » developpement et, developpement des, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation 2 » variation 27, variation _, variation 6
costs traps » costs trade
der rural » under rural, der ruralen, do rural
2 der » _ der

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation 2 der rural communications costs traps developpement en afrique.*.