Perhaps you should try some spelling variations:
communication slaves » communication spaces, communication series, communication styles
information 1.5.2 » information 1.2, information 2
urban development » human development
development curse » development course, development cure, development courses
4 communication » 3 communication, 5.4 communication, de communication
technologies 4 » technologies _
4 information » 2 information, 1 information
slaves urban » spaces urban, frames urban, lands urban
curse africa » use africa, care africa, europe africa
1.5.2 dem » 1.5.2 die, 3.5.2 der, 5.5.2 der
dem 4 » dem _, dem 2, dem 1

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information 1.5.2 dem 4 communication slaves urban development curse africa.*.