Perhaps you should try some spelling variations:
communication medien » communication media, communication medium, communication mediums
oral communication » personal communication
die developpement » de developpement, le developpement, du developpement
formation across » information across, variation across, variations across
developpement en » developpement et, developpement des, developpement de
des formation » des formations, de formation, des information
typology des » typologie des, typologie der, typology _
across test » across east, across ten, across tasks
medien die » medien eine, medien der, medien im
test oral » test opa

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• Adding a wildcard symbol may retrieve word variants: typology des formation across test oral communication medien die developpement en afrique.*.