Perhaps you should try some spelling variations:
oral communication » personal communication
die developpement » de developpement, le developpement, du developpement
variation series » education series, action series, edition series
developpement la » developpement de, developpement et, developpement du
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
la afrique » l afrique, la fabrique, en afrique
series a » series _, series 1, series 2
a oral » _ oral, 2 oral, 4 oral
a die » 2 die, 3 die, _ die

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

• Adding a wildcard symbol may retrieve word variants: typologie de variation series a oral communication a die developpement la afrique.*.