Perhaps you should try some spelling variations:
communication 22.1 » communication 2.1, communications 2.2.1, communication 8.2.1
oral communication » personal communication
variation lending » education lending, variation using
et developpement » de developpement, le developpement, test development
typologien does » typologie des, typologien der, typologie der
does variation » de variation, der variation, die variation
lending does » reading does, lending rates, lending booms
des afrique » en afrique, de l'afrique
does oral » does formal, does oil
22.1 et » 22.1 heat

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• Adding a wildcard symbol may retrieve word variants: typologien does variation lending does oral communication 22.1 et developpement des afrique.*.