Perhaps you should try some spelling variations:
internal communication » interpersonal communication, intercultural communication, personal communication
developpement du » developpement de, developpement des, developpement et
der variation » de variation, does variation, die variation
variation 4 » variations 4, variation _, variation 6
4 internal » 2 internal
du afrique » en afrique, l afrique, de l'afrique
3 les » 1 les, 5 les
theorie » theories

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "theorie der variation 4 4 internal communication ((3 les) OR (2 les)) developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: theorie der variation 4 4 internal communication ((3 les) OR (2 les)) developpement du afrique.*.