Perhaps you should try some spelling variations:
information content » information contents, information centers, information centre
technologies 2.1 » technologies _, technologies 4, technologies a
de communication » mobile communication, online communication
2.1 information » 3.1 information
6.4 developing » 5.4 developing, 3.3 developing, 2.2 developing
content a » content _, content 1, content 3
costs 6.4 » costs 4.4, costs 4.2, costs 2.3
a de » a die, a der, a des

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information content a de communication costs 6.4 developing _ africa.*.