Perhaps you should try some spelling variations:
trough communication » through communication, thought communication, touch communication
communication cost » communication costs, communication costa, communications costs
model development » local development, social development, global development
technology cost » technology case, technology can, technology choice
cost regulation » post regulation, post regulations, cft regulation
process trough » process through, process rough, process thought
regulation a » regulation _
china den » chinas den, china des, china does

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

• Adding a wildcard symbol may retrieve word variants: technology cost regulation a process trough communication cost model development china den.*.