Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
time communications » time communication, type communications, wartime communications
model development » local development, social development, global development
relations across » relations cross, regulations across, correlations across
development case » development china
technology des » technology does, technology debts, technology nodes
des relations » les relations, its relations, et relations
across same » across space, across age, across scales
costs model » cost model, cost models, costs money
case birth » rate birth, sale birth
same time » space time

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

• Adding a wildcard symbol may retrieve word variants: technology des relations across same time communications costs model development case birth.*.