Perhaps you should try some spelling variations:
variation series » education series, action series, edition series
et developpement » de developpement, le developpement, test development
developpement en » developpement et, developpement des, developpement de
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
series und » serien und, serials und, series land
a et » a set, a net, a bet

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 und mobile communication a et developpement en afrique.*.