Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
mouth communications » south communications, month communication, truth communication
technology shock » technology shocks, technology social, technology study
part development » port development, past development, smart development
development case » development china
shock relations » work relations, shot relation, shock simulations
relations do » relations du, relations das, relations der
states mouth » states south, state south, states module
costs part » costs per
do states » do state, d states, two states
case data » cases data, base data, use data

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

• Adding a wildcard symbol may retrieve word variants: technology shock relations do states mouth communications costs part development case data.*.