Perhaps you should try some spelling variations:
information kontext » information content, information contents, information centers
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
technologies 1 » technologies _, technologies 4, technologies 2
5.4 developing » 6.4 developing, 3.3 developing, 2.2 developing
kontext einer » kontext der
einer de » einer der, einer dm, einer dun
cost 5.4 » costs 5.4, cost 2.4, cost 3.4

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information kontext einer de communication cost 5.4 developing _ africa.*.