Perhaps you should try some spelling variations:
basic communication » based communication, asia communication, bic communication
information costs » information contents, information centers, information content
communication 5.5 » communication 3.3, communication 2.4, communication 3.2
4 developing » 3 developing
developing e » developing _, developing a, developing east
costs 3.1 » costs 3.5, costs 4.1, costs 2.1
3.1 basic » 2.1 basic
e afrique » en afrique, l afrique, de l'afrique
5.5 4 » 5.5 _, 5.5 a

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information costs 3.1 basic communication 5.5 4 developing e afrique.*.