Perhaps you should try some spelling variations:
oral communication » personal communication
variation series » education series, action series, edition series
developpement en » developpement et, developpement des, developpement de
typologie minor » typologie eines, typologie einiger
minor variation » minor irrigation, color variation, gender variation
communication 3 » communication _, communication a
a developpement » au developpement, de developpement, le developpement
series der » serien der, series de, series d
der oral » der moral, der ort, der orte

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

• Adding a wildcard symbol may retrieve word variants: typologie minor variation series der oral communication 3 a developpement en afrique.*.