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 from » development forum, development fund
technology soc » technology shock, technology some, technology set
soc relation » shot relation, soc correlation, hoc regulation
relation co » relations co, relation c, relation von
from dar » from day, from dr, from data
co same » non same
same de » dame de, ame de, same idea

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

• Adding a wildcard symbol may retrieve word variants: technology soc relation co same de communication cost model development from dar.*.