Perhaps you should try some spelling variations:
information centre » information centers, information contents
oral communication » personal communication
technologies 2 » technologies _, technologies 4
centre lived » century lived, centre leben, centre mitec
4 developing » 3 developing
developing a » developing _
lived oral » derived oral
a african » _ african, 1 african, 2 african
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 centre lived oral communication costs 4 developing a african.*.