Perhaps you should try some spelling variations:
users information » user information, museums information, series information
information costs » information contents, information centers, information content
2.3 communication » 3.2 communication, de communication, 4 communication
technology users » technology use, technology series, technology transfers
costs case » costs cash
1 afrique » l afrique, en afrique, 1 enrique
case 2.3 » case 3, case 4.1, case 4.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology users information costs case 2.3 communication costs a development 1 afrique.*.