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
4a information » a information, via information, lca information
technology 4a » technology 4, technology a, technology 4.1
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 4a information gap from sign communication cross world development works africa.*.