Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement de » developpement des, developpement durable
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
variation 6 » variation _, variations _, variation des
de afrique » de l'afrique, en afrique, l afrique
does de » does debt
6 does » 16 does, 2 does, 4 does
7.1 el » 1.1 el, 2.1 el, 4.1 el
3.1 el » 1.1 el

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 6 does de communication ((7.1 el) OR (3.1 el)) developpement de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie die variation 6 does de communication ((7.1 el) OR (3.1 el)) developpement de afrique.*.