Perhaps you should try some spelling variations:
communication cross » communication costs
de communication » mobile communication, online communication
3 development » 2 development
development 2 » development 1, development 2.1, development 2.3
3.2 aided » 3.1 aided, 3.2 add
aided de » aided mec, aided _, aided 2d
cross 3 » cross _, cross 1, cross c

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 3.2 aided de communication cross 3 development 2 real.*.