Perhaps you should try some spelling variations:
csr communication » de communication, 3 communication, 4 communication
communication 20 » communication 2.0, communication 2, communication 10
23 developing » 2.3 developing, 3 developing, 2 developing
contents 2.1 » contents 12.1, contexts 2.1, contents 3.1
developing l » developing l2, developing _, developing a
l afrique » en afrique
2.1 csr » 2.3 csr, 2.1 case, 2.1 cost
20 23 » 20 21, 20 22, 22 23

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information contents 2.1 csr communication 20 23 developing l afrique.*.