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