Perhaps you should try some spelling variations:
information spaces » information space, information states, information sources
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
spaces based » space based, spaces case, spaces cases
4 developing » 3 developing
developing a » developing _
based 4.1 » based 4.3, used 4.1
a afrique » l afrique, en afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology _ information spaces based 4.1 communication costs 4 developing a afrique.*.