Perhaps you should try some spelling variations:
das developpements » des developpements, deux developpements, de developpement
developpements et » developpement et, developpement en, developpements de
communication 4 » communication _, communication a, communication 3
die variation » de variation, does variation, der variation
typology die » typology _, typology 4.1, typology 6
et afrique » en afrique, l afrique
dc power » 2 power, 4 power, 1 power
3 power » 2 power, 4 power
4 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: "typology die variation _ ((dc power) OR (3 power)) communication 4 das developpements et afrique.~".
• Adding a wildcard symbol may retrieve word variants: typology die variation _ ((dc power) OR (3 power)) communication 4 das developpements et afrique.*.