Perhaps you should try some spelling variations:
de communication » mobile communication, online communication
developpement et » developpement des, developpement de, development east
typologie de » typologie des, typologie der, typologien der
de variation » der variation, die variation, does variation
variation 6 » variation _, variations _, variation des
et afrique » en afrique, l afrique
does de » does debt
6 does » 16 does, 2 does, 4 does
1.3 eu » 3.3 eu, 1.3 ea, 1.3 ed
1.3 el » 2.3 el, 3.3 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 de variation 6 does de communication ((1.3 eu) OR (1.3 el)) developpement et afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie de variation 6 does de communication ((1.3 eu) OR (1.3 el)) developpement et afrique.*.