Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information centers » information contents, information officers
technologies 1 » technologies _, technologies 4, technologies 2
1 developing » 3 developing, 4 developing, 2 developing
developing a » developing _
de personal » der personal, des personal, de persona
centers de » centers _, centres de, centers 10
a africa » 1 africa, can africa, em africa
costs 1 » costs _, costs 4, costs a

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 de personal communication costs 1 developing a africa.*.