Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement du » developpement de, developpement des, developpement et
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
variation 4 » variations 4, variation _, variation 6
du afrique » en afrique, l afrique, de l'afrique
does de » does debt
4 does » 2 does
3.3 et » 3.3 eu, 3.3 en, 3.3 eq
3.3 el » 2.3 el, 3.3 eu

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: "typologie die variation 4 does de communication ((3.3 et) OR (3.3 el)) developpement du afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie die variation 4 does de communication ((3.3 et) OR (3.3 el)) developpement du afrique.*.