Perhaps you should try some spelling variations:
research applications » research application, research implications, research publications
des developpement » des developpements, de developpement, le developpement
variation using » variations during, variation und, variation among
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
des afrique » en afrique, de l'afrique
series des » series de, series d, series e

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

• Adding a wildcard symbol may retrieve word variants: typologie der variation using _ research applications series des developpement des afrique.*.