Perhaps you should try some spelling variations:
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
a does » 4 does, 1 does, 3 does
2 does » 4 does

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 ((a does) OR (2 does)) data communications _ le developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation ((a does) OR (2 does)) data communications _ le developpement en afrique.*.