Perhaps you should try some spelling variations:
communication cross » communication costs
information centre » information centers, information contents
debt communication » de communication, et communication, get communication
technologies 4 » technologies _
3.2 developing » 3.3 developing, 2.2 developing, 3 developing
4 information » 2 information, 1 information
cross 3.2 » cros 3.4, gloss 3.2
centre 4 » centre _, centre a, centre c
4 debt » 3 debt, 4 debats

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information centre 4 debt communication cross 3.2 developing _ africa.*.