Perhaps you should try some spelling variations:
income kommunikation » interne kommunikation, online kommunikation, image kommunikation
de developpement » sme development
developpement de » developpement des, developpement durable
kommunikation a » kommunikation aa, kommunikation _, kommunikation 1
de afrique » de l'afrique, en afrique, l afrique
a farm » _ farm
m farm » _ farm
a de » a die, a der, a des

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

• If you are trying to use Boolean operators, they must be ALL CAPS: typology _ variation ((a farm) OR (m farm)) income kommunikation a de developpement de afrique.~.
• Adding a wildcard symbol may retrieve word variants: typology _ variation ((a farm) or (m farm)) income kommunikation a de developpement de afrique.*.