Perhaps you should try some spelling variations:
personal communication » interpersonal communication
information center » information centers, information centre, information content
technologies 2 » technologies _, technologies 4
developing em » developing e, developing eq, developing amp
4 developing » 3 developing
center 1945 » center 13.5, center 10.5, center 1984
em 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 2 information center 1945 personal communication costs 4 developing em africa.*.