Perhaps you should try some spelling variations:
communication cross » communication costs
de communication » mobile communication, online communication
development 2.3 » development 2.1, development 1
information 3 » information 2
3 development » 2 development
2.3 real » 2.3 reale, 3.3 real, 8.3 real
cross 3 » cross _, cross 1, cross c
add de » add d, odd de
3 add » _ add, 1 add, 3 bdd

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information 3 add de communication cross 3 development 2.3 real.*.