Perhaps you should try some spelling variations:
data communication » data communications
variation series » education series, action series, edition series
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
development l » development li, development 1, development law
series do » series d, series de, series how
l afrique » en afrique
do data » eo data, go data, geo data

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 series do data communication ((4 does) OR (2 does)) development l afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation series do data communication ((4 does) OR (2 does)) development l afrique.*.