Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information centers » information contents, information officers
technologies 1 » technologies _, technologies 4, technologies 2
2.3 developing » 3.3 developing, 2.2 developing, 1.3 developing
developing a » developing _
costs 2.3 » costs 4.2, costs 4.4
a africa » 1 africa, can africa, em africa

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information centers _ personal communication costs 2.3 developing a africa.*.