Perhaps you should try some spelling variations:
information costs » information contents, information centers, information content
dei communication » de communication, debt communication, ec communication
communication 5.5 » communication 3.3, communication 2.4, communication 3.2
technologies co » technologies _, technologies 4, technologies 2
co information » do information, 2 information, 1 information
development li » development lid, development lie, development lin
li afrique » l afrique, en afrique
net dei » net debit, net debt
5.5 2 » 5.5 _, 5.5 a, 6.5 2

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

• Adding a wildcard symbol may retrieve word variants: technologies co information costs net dei communication 5.5 2 development li afrique.*.