Perhaps you should try some spelling variations:
communication cross » communication costs
open communication » human communication, 3 communication, 4 communication
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
technologies 2 » technologies _, technologies 4
developing a » developing _
contents 3 » contents 1, contents _, contents i
cross 12.4 » crops 12.4, process 12.4
a africa » 1 africa, can africa, em africa
3 open » 2 open

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information contents 3 open communication cross 12.4 developing a africa.*.