Perhaps you should try some spelling variations:
oral communication » personal communication
variation reading » tradition reading, variation among, variation using
communication 2.4 » communication 3.3, communication 4, communication _
la developpement » le developpement, de developpement, et developpement
developpement en » developpement et, developpement des, developpement de
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
reading does » lending does, reading die, reading books
does oral » does formal, does oil

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

• Adding a wildcard symbol may retrieve word variants: typologien der variation reading does oral communication 2.4 la developpement en afrique.*.