Perhaps you should try some spelling variations:
communication cross » communication costs
open communication » human communication, 3 communication, 4 communication
development works » development work, development workshop, development network
4.1 information » 3.1 information, 2.1 information, 6.1 information
information gdp » information gap, information gaps, information guide
technology 4.1 » technology 3.1, technology 2.1, technology 1
works africa » towns africa
cross world » across world, crisis world, cpss world
from open » from oem, from one
gdp from » gap from, up from, map from

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

• Adding a wildcard symbol may retrieve word variants: technology 4.1 information gdp from open communication cross world development works africa.*.