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 does » typologie des, typologien der, typologie der
does variation » de variation, der variation, die variation
et afrique » en afrique, l afrique
series 2 » series _, series 1
2 oral » _ oral, 4 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 does variation series 2 oral communication a de developpement et afrique.*.