Perhaps you should try some spelling variations:
oral communication » personal communication
variation series » education series, action series, edition series
la developpement » le developpement, de developpement, et developpement
developpement en » developpement et, developpement des, developpement de
typologie eines » typologie cices, typologie einiger, typologie des
eines variation » die variation, does variation, minor variation
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 eines variation series der oral communication _ la developpement en afrique.*.