Perhaps you should try some spelling variations:
device communication » services communication, voice communication, mobile communication
development en » developpement en, development menu, development eco
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
variation des » variation _, variation 6, variation series
dem device » tpm device
des dem » das dem, des der, des des
3 set » _ set, a set, 4 set
2 set » _ set, a set

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 der variation des dem device communication ((3 set) OR (2 set)) development en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation des dem device communication ((3 set) OR (2 set)) development en afrique.*.