Perhaps you should try some spelling variations:
oral communication » personal communication
development does » development data, development 1, development 1.1
communication 3 » communication _, communication a
variation uber » variationen uber, variation bei, variation der
de variation » der variation, die variation, does variation
does afrique » en afrique, does africa
typology de » typology _, typology 6, typology a
uber den » uber die
den oral » den ort, new oral
3 gas » _ gas, 2 gas

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

• Adding a wildcard symbol may retrieve word variants: typology de variation uber den oral communication 3 gas development does afrique.*.