Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
time communication » de communication, mobile communication, online communication
model development » local development, social development, global development
development case » development china
technology des » technology does, technology debts, technology nodes
relations cost » relations post, relations cross, relations case
des relations » les relations, its relations, et relations
case birth » rate birth, sale birth
cost same » cost some, cost scale, cost share
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 cost same time communication cost model development case birth.*.