Perhaps you should try some spelling variations:
communications 3 » communications _, communications a, communications 5
development does » development data, development 1, development 1.1
variation des » variation _, variation 6, variation series
typologie et » typologie des, typologie der, typologie von
et variation » der variation, bei variation, 2 variation
does afrique » en afrique, does africa
em data » nm data, them data, aim data
des em » des eg
3 gas » _ gas, 2 gas

You may be able to get more results by adjusting your search query.

• Adding a wildcard symbol may retrieve word variants: typologie et variation des em data communications 3 gas development does afrique.*.