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
2.4 developing » 12.4 developing, 2.2 developing, 5.4 developing
kontext des » kontext der
des de » des dem, des der, des des

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 des de communication cost 2.4 developing _ africa.*.