Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
time communication » de communication, mobile communication, online communication
models development » model development, module development, model developments
technology debts » technology debate, technology data, technology dlt
development case » development china
debts relations » des relations, les relations, its relations
relations cost » relations post, relations cross, relations case
cost models » cost model, logit models
case birth » rate birth, sale birth
cost time » costs time, past time, best time
time time » same time, life time

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

• Adding a wildcard symbol may retrieve word variants: technology debts relations cost time time communication cost models development case birth.*.