Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
information some » information source, information stored, information space
developing ai » developing a, developing av, developing asia
technology 2 » technology _, technology 1, technology 3
4 developing » 3 developing
ai afrique » en afrique, l afrique
case 4.1 » case 4.2, case 1
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 2 information some case 4.1 communication costs 4 developing ai afrique.*.