Perhaps you should try some spelling variations:
oral communication » personal communication
variation series » education series, action series, edition series
de developpement » sme development
developpement et » developpement des, developpement de, development east
typologien der » typologie der, typologie des, apologien der
der variation » de variation, does variation, die variation
et afrique » en afrique, l afrique
series 4 » series _, series 1, series 2
4 oral » _ oral, 2 oral
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: typologien der variation series 4 oral communication a de developpement et afrique.*.