Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologies 2.1 » technologies _, technologies 4, technologies a
et communication » et communicatione, get communication, debt communication
2.1 information » 3.1 information
3.3 developing » 4 developing, 2 developing, 1 developing
contents 15.4 » concepts 15.4, contents 5.1, contents 1.1
developing ai » developing a, developing av, developing asia
ai africa » ii africa, can africa, 1 africa
cost 3.3 » cost 3.2, cost 2.3, cost 3.4
15.4 et » 15.4 get, 15.4 des, 15.4 eco

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 15.4 et communication cost 3.3 developing ai africa.*.