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 de » typologien der, typologies _, typologie des
de variation » der variation, die variation, does variation
costly trade » costs trade, country trade, costly than
variation a » variation _, variation 6, variation 5
der et » der eg, mer et, der ec
a der » _ der, 2 der, 3 der

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

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