Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
technologies 2.1 » technologies _, technologies 4, technologies a
1 communications » 10 communications, 14 communications, 1 communication
2.1 information » 3.1 information
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
contents case » contents fase, context case, contents causal
developing ai » developing a, developing av, developing asia
costs 4.4 » costs 4.2
ai africa » ii africa, can africa, 1 africa

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

• Adding a wildcard symbol may retrieve word variants: technologies 2.1 information contents case 1 communications costs 4.4 developing ai africa.*.