Perhaps you should try some spelling variations:
developing cross » development cross, developing areas, development across
et communication » et communicatione, get communication, debt communication
technologies 1 » technologies _, technologies 4, technologies 2
contents 12.1 » contexts 12.1, contents 1.1, contents 10.1
cross african » across african, across africa, class african
4 developing » 3 developing
12.1 et » 12.1 des
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: technologies 1 information contents 12.1 et communication costs 4 developing cross african.*.