Perhaps you should try some spelling variations:
online communication » mobile communication, business communication, mobile communications
developpement east » development east, developpement et, developpement des
des variation » does variation, de variation, der variation
variation des » variation _, variation 6, variation series
east afrique » east africa, east african, en afrique
theorie des » theorie der
new online » der online, des online
3 au » 3 auf, 3 a, 3 eu
3 zu » 3 zur, 3 zum, 2 zu

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 des variation des new online communication ((3 au) OR (3 zu)) developpement east afrique.~".
• Adding a wildcard symbol may retrieve word variants: theorie des variation des new online communication ((3 au) OR (3 zu)) developpement east afrique.*.