Perhaps you should try some spelling variations:
services communication » device communication, service telecommunication, crisis communication
variation series » education series, action series, edition series
de developpement » sme development
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
das services » gas services, des services, dam services
des afrique » en afrique, de l'afrique
series das » series data, series bias, series a
a de » a die, a der, a des

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 das services communication a de developpement des afrique.*.