Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
post communication » postal communication, iot communication, put communication
trade development » software development
development rural » development moral, development cultural, development general
des variation » does variation, de variation, der variation
rural afrique » rural africa
costly trade » costs trade, country trade, costly than
variation a » variation _, variation 6, variation 5
a der » _ der, 2 der, 3 der
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation a der post communication costly trade development rural afrique.*.