Perhaps you should try some spelling variations:
time communication » de communication, mobile communication, online communication
model development » local development, social development, global development
development case » development china
technology its » technology isst, technology ict, technology ii
relations cost » relations post, relations cross, relations case
its relations » its relation, les relations, its relationship
costs model » cost model, cost models, costs money
cost space » cost scale, cost share
case birth » rate birth, sale birth

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

• Adding a wildcard symbol may retrieve word variants: technology its relations cost space time communication costs model development case birth.*.