Perhaps you should try some spelling variations:
otras communication » optical communication, towards communication, actors communication
information costs » information contents, information centers, information content
development works » development work, development workshop, development network
technologies new » technologies _, technologies 4, technologies 2
new information » 2 information
works africa » towns africa
costs 2.3 » costs 4.2, costs 4.4
2.3 otras » 3.4 otras
media a » media _, media 1, media 3

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

• Adding a wildcard symbol may retrieve word variants: technologies new information costs 2.3 otras communication media a development works africa.*.