Perhaps you should try some spelling variations:
das developpement » des developpements, de developpement, du developpement
variation series » education series, action series, edition series
developpement en » developpement et, developpement des, developpement de
opportunities 1 » opportunities _, opportunities a, opportunities 5
der variation » de variation, does variation, die variation
typology der » typologie der, typologien der, typologie des
de business » die business, e business, ce business
series de » series d, series e, series new

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

• Adding a wildcard symbol may retrieve word variants: typology der variation series de business opportunities 1 das developpement en afrique.*.