Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
model development » local development, social development, global development
de communication » mobile communication, online communication
development rate » development create, development route, development water
relations class » relations case, relations cross, relations cases
technology des » technology does, technology debts, technology nodes
des relations » les relations, its relations, et relations
time de » time die, estime de, time done

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

• Adding a wildcard symbol may retrieve word variants: technology des relations class time de communication cost model development rate birth.*.