Perhaps you should try some spelling variations:
oral communication » personal communication
communication gets » communication gaps, communication gt, communication gap
trap development » trade development, crop development, trade developments
development de » development d, development ds, developpement de
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
dem oral » dem gral, dem ort
des dem » das dem, des der, des des
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation des dem oral communication gets trap development de l'afrique.*.