Perhaps you should try some spelling variations:
oral communication » personal communication
der developpement » de developpement, des developpements, leur developpement
apologien de » apologien der, apologia de, apologie des
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
des afrique » en afrique, de l'afrique
does oral » does formal, does oil
6 does » 16 does, 2 does, 4 does
a der » _ der, 2 der, 3 der

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

• Adding a wildcard symbol may retrieve word variants: apologien de variation 6 does oral communication a der developpement des afrique.*.