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
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
kontext einer » kontext der
einer de » einer der, einer dm, einer dun
cost 2.2 » costs 2.2, cost 2.4, cost 3.2

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 2.2 developing _ africa.*.