Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information century » information centers, information centre, information center
technologies 1 » technologies _, technologies 4, technologies 2
developing eq » developing e, developing egg, developing _
century 1945 » century 19.5, century 1900, century 185
4 developing » 3 developing
eq africa » em africa, eu africa, 1 africa
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies 1 information century 1945 personal communication costs 4 developing eq africa.*.