Perhaps you should try some spelling variations:
changes development » change development, channel development, challenges development
information costs » information contents, information centers, information content
communication 19 » communication 1, communication 10, communication 9
development sdn » development sri, development sweden, development study
technologies a » technologies _, technologies 4, technologies 2
a information » 2 information, 1 information
sdn african » sino african, pan african, six african
19 changes » 1 changes, 15 changes, 9 changes
costs d1 » costs 1, costs 4.1, costs 2.1
d1 human » 1 human, 11 human, do human

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

• Adding a wildcard symbol may retrieve word variants: technologies a information costs d1 human communication 19 changes development sdn african.*.