Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
developpements de » developpement de, developpement des, developpement du
typologie die » typologie des, typologie der, theologie die
die variation » de variation, does variation, der variation
variation des » variation _, variation 6, variation series
de afrique » de l'afrique, en afrique, l afrique
a des » a der
des _ » yes _
a das » 1 das, 2 das, 3 das

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 des _ device communication ((a des) OR (a das)) developpements de afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie die variation des _ device communication ((a des) OR (a das)) developpements de afrique.*.