Perhaps you should try some spelling variations:
oral communication » personal communication
variation reading » tradition reading, variation among, variation using
communication 2.1 » communication 22.1, communications 2.1, communication 2.4
du developpement » de developpement, le developpement, et developpement
typologien de » typologien der, typologie des, typologie der
de variation » der variation, die variation, does variation
reading die » reading does, reading iii, reading guide
des afrique » en afrique, de l'afrique
die oral » die moral, die orte
2.1 du » 2.1 due, 2.1 de, 2.1 do

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

• Adding a wildcard symbol may retrieve word variants: typologien de variation reading die oral communication 2.1 du developpement des afrique.*.