Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
vector development » sector development, sector developments, factor development
development acute » development act, development route, development age
el communication » cell communication, real communication, 3 communication
relations 2.5 » relations 2.1, relations 2.4, relations 7.5
acute aortic » after aortic
cost vector » class vector, reset vector, short vector
2.5 crisis » 2.1 crisis, 2.2 crisis, 2 crisis
crisis el » crisis _, crisis a, crisis 1

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

• Adding a wildcard symbol may retrieve word variants: technology _ relations 2.5 crisis el communication cost vector development acute aortic.*.