Perhaps you should try some spelling variations:
developpement durable » developpement de
communication costly » communication costs, communication costa, communications costs
trade developpement » trade developement, trade development, de developpement
et communication » et communicatione, get communication, debt communication
typologies die » typologies _, typologie des, typologie der
die variation » de variation, does variation, der variation
costly trade » costs trade, country trade, costly than
variation a » variation _, variation 6, variation 5
bear et » bear out, bear put
a bear » _ bear, a beam, a bean

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

• Adding a wildcard symbol may retrieve word variants: typologies die variation a bear et communication costly trade developpement durable afrique.*.