Perhaps you should try some spelling variations:
communicatione costly » communication costs, communications costs, communication costa
developpement durable » developpement de
trade developpement » trade developement, trade development, de developpement
et communicatione » et communication, 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
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 die variation a der et communicatione costly trade developpement durable afrique.*.