Perhaps you should try some spelling variations:
class communication » mass communication, plans communication, crisis communication
information costs » information contents, information centers, information content
development works » development work, development workshop, development network
technologies 2 » technologies _, technologies 4
works africa » towns africa
costs 4.1 » costs 4.2, costs 4.4, costs 4.3
4.1 class » 3.4.1 class, 4.1 classic, 4.4.1 class
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 2 information costs 4.1 class communication media a development works africa.*.