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
10 communication » 1 communication, de communication, 3 communication
development case » development china
technologies 2 » technologies _, technologies 4
slaves urban » spaces urban, frames urban, lands urban
case africa » cases africa, care africa, curse africa
1.5.2 dem » 1.5.2 die, 3.5.2 der, 5.5.2 der
dem 10 » diem 10, dem 19, dem 18

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information 1.5.2 dem 10 communication slaves urban development case africa.*.