Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
vector development » sector development, sector developments, factor development
eu communications » eu communication, peru communications, les communications
relations 6.3.1 » relations 3.1, relations 1.2.1, relations 6.1
technology 4 » technology _, technology 1, technology 3
6.3.1 crisis » 2.3.1 crisis, 6.3.2 crisis, 6.3.1 cross
costs vector » cost vector, basis vector, class vector
4 relations » 3 relations, 4 relation, 1 relations
crisis eu » crisis el, crises eu, crisis en
a aortic » _ aortic, _ artic

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

• Adding a wildcard symbol may retrieve word variants: technology 4 relations 6.3.1 crisis eu communications costs vector development a aortic.*.