Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
model development » local development, social development, global development
development scale » development stage, development small, development scaling
relations cost » relations post, relations cross, relations case
technology 4 » technology _, technology 1, technology 3
4 relations » 3 relations, 4 relation, 1 relations
scale birth » sale birth
cost share » cost shares, cost aware, cost scale

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

• Adding a wildcard symbol may retrieve word variants: technology 4 relations cost share _ communication cost model development scale birth.*.