Perhaps you should try some spelling variations:
time communication » de communication, mobile communication, online communication
modern development » modern developments, model development, models 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
costs modern » costs money, texts modern
cost aware » qos aware, code aware, cost share
aware time » spare time
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 des relations cost aware time communication costs modern development case birth.*.