Perhaps you should try some spelling variations:
del communications » cell communications, sepl communications, do communications
relationship 13.3 » relationship 15.3.3, relationship 1.3.4, relationship 5.3.3
3.3 relationship » a relationship
care development » case development, career development, scale development
technology 3.3 » technology 3.1, technology 3.2, technology 2.3
13.3 crisis » 13.2 crisis, 3.1 crisis, 1.1 crisis
crisis del » crisis desde
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 3.3 relationship 13.3 crisis del communications _ care development a aortic.*.