Perhaps you should try some spelling variations:
del communication » cell communication, real communication, cell communications
development acute » development act, development route, development age
relations 2011 » relations 2.1, relations 1.11, relations 10.1
technology 4 » technology _, technology 1, technology 3
costs career » costs chapter, costs case, costs clear
acute aortic » after aortic
4 relations » 3 relations, 4 relation, 1 relations
2011 crisis » 2010 crisis, 11 crisis, 2.1 crisis
crisis del » crisis desde

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

• Adding a wildcard symbol may retrieve word variants: technology 4 relations 2011 crisis del communication costs career development acute aortic.*.