Perhaps you should try some spelling variations:
moral communications » moral communication, oral communication, rural communications
communications costs » communication costs, communications _
trade developpement » trade developement, trade development, de developpement
developpement de » developpement des, developpement durable
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
costs trade » costly trade
de afrique » de l'afrique, en afrique, l afrique
etc moral » c moral, ethics moral

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

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