Perhaps you should try some spelling variations:
formal communications » informal communication, oral communication, rural communications
communications series » communication series, communications services, communication services
des developpements » deux developpements, de developpement, et developpements
developpements en » developpement en, developpement et, developpements de
des variation » does variation, de variation, der variation
does formal » loss formal, does formality, des formalen
series des » series de, series d, series e
typologie » typologies, typology

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

• Adding a wildcard symbol may retrieve word variants: typologie des variation _ does formal communications series des developpements en afrique.*.