Perhaps you should try some spelling variations:
technological content » technological potential, technological frontier, technological change
content information » contents information, contact information, contract information
voice communication » voice communications, mobile communication, device communication
information need » information needs, information needed, information speed
au developpement » du developpement, de developpement, le developpement
communication 2 » communication _, communication a, communication 3
developpement 1 » developpement 1.4, developpement de, developpement et
need exit » need fit
2 au » 2 auf, 2 abu, 2 aus

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

• Adding a wildcard symbol may retrieve word variants: technological content information need exit voice communication 2 au developpement 1 africa.*.