Perhaps you should try some spelling variations:
mask communications » mass communications, mass communication, faso communications
variation series » education series, action series, edition series
et developpement » de developpement, le developpement, test development
developpement de » developpement des, developpement durable
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
series based » services based, studies based, devices based
based mask » based task, based mass, based tasks
de afrique » de l'afrique, en afrique, l afrique

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 based mask communications _ et developpement de afrique.*.