Perhaps you should try some spelling variations:
communication cross » communication costs
sign communication » open communication, human communication, 3 communication
development works » development work, development workshop, development network
4.1 information » 3.1 information, 2.1 information, 6.1 information
technology 4.1 » technology 3.1, technology 2.1, technology 1
works africa » towns africa
cross world » across world, crisis world, cpss world
from sign » from design, from signal, from six
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 sign communication cross world development works africa.*.