Perhaps you should try some spelling variations:
information costs » information contents, information centers, information content
10 communication » 1 communication, de communication, 3 communication
4.4 developing » 5.4 developing, 6.4 developing, 1.4 developing
costs debates » los debates, concepts debates
technology 1 » technology _
debates 10 » debates 1, debates 12, debates 10.3
costs 4.4 » costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information costs debates 10 communication costs 4.4 developing _ africa.*.