Perhaps you should try some spelling variations:
mutual communication » cultural communication, virtual communication, natural communication
developpements rates » developpements futurs, developpement des, development rate
das developpements » des developpements, deux developpements, de developpement
information speed » information sheet, information needed, information needs
communication 3 » communication _, communication a
rates africa » state africa
4 mutual » 1 mutual, _ mutual, 3 mutual
speed 4 » speed _, speed up, speeds _
3 das » 1 das, 2 das

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information speed 4 mutual communication 3 das developpements rates africa.*.