Perhaps you should try some spelling variations:
communication services » telecommunications services
zeit communication » debt communication, et communication, get communication
un developpement » en developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
typologies 2.3 » typologies 2.5, typologies 6.3, typologie 1.3
2.3 variation » 3.3 variation, 1.3 variation, 2.1 variation
variation des » variation _, variation 6, variation series
services un » services und, services une, services us
ddr zeit » der zeit, oder zeit, die zeit
des ddr » der ddr, des dr, dem ddr

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

• Adding a wildcard symbol may retrieve word variants: typologies 2.3 variation des ddr zeit communication services un developpement de l'afrique.*.