Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
moral communications » moral communication, oral communication, rural communications
trade developpement » trade developement, trade development, de developpement
developpement en » developpement et, developpement des, developpement de
typologien de » typologien der, typologie des, typologie der
de variation » der variation, die variation, does variation
variation 1 » variations 1, variation _, variation 6
costs trade » costly trade
etc moral » c moral, ethics moral
1 etc » 1 itc, _ etc

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

• Adding a wildcard symbol may retrieve word variants: typologien de variation 1 etc moral communications costs trade developpement en afrique.*.