Perhaps you should try some spelling variations:
time communication » de communication, mobile communication, online communication
key development » city development, mena development, energy development
technology des » technology does, technology debts, technology nodes
relations cost » relations post, relations cross, relations case
des relations » les relations, its relations, et relations
china birth » chains birth, child birth, china north
cost aware » qos aware, code aware, cost share
aware time » spare time
costs key » costs amy

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 key development china birth.*.