Perhaps you should try some spelling variations:
communications 5 » communications _, communications a, communications pt
development does » development data, development 1, development 1.1
das development » dams development, gas development, does development
does afrique » en afrique, does africa
der em » der ec, der ei, der emrk
5 das » 1 das, 2 das, 3 das

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: "typologies _ variation ((der em) OR (der eg)) data communications 5 das development does afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologies _ variation ((der em) OR (der eg)) data communications 5 das development does afrique.*.