Perhaps you should try some spelling variations:
communication cross » communication costs
technologies daf » technologies dans, technologies a, technologies de
de communication » mobile communication, online communication
daf information » f information, math information, 2 information
developing east » development east, developing a, developing asia
3 developing » 3 development
3.2 add » 3.2 ad, 3.2 aided, 3.2.4 add
cross 3 » cross _, cross 1, cross c
add de » add d, odd de
areal. » areas., area., real.

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

• Adding a wildcard symbol may retrieve word variants: technologies daf information 3.2 add de communication cross 3 developing east areal.*.