Perhaps you should try some spelling variations:
development acute » development act, development route, development age
el communication » cell communication, real communication, 3 communication
relations 2.1 » relations 3.1, relations 1, relations _
technology 4 » technology _, technology 1, technology 3
costs sector » ports sector, cost vector, dots sector
acute aortic » after aortic
4 relations » 3 relations, 4 relation, 1 relations
2.1 crisis » 3.1 crisis, 2010 crisis, 2011 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 4 relations 2.1 crisis el communication costs sector development acute aortic.*.