Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information centre » information centers, information contents
technologies 1 » technologies _, technologies 4, technologies 2
3.3 developing » 4 developing, 2 developing, 1 developing
developing a » developing _
costs 3.3 » costs 2.3, costs 3.5, costs 4.3
centre a » centres a, centre _, centre c
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 centre a personal communication costs 3.3 developing a africa.*.