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
car development » care development, char development, scar development
3 relationship » a relationship, 4 relationship, 3.3 relationship
technology 3 » technology _, technology 1, technology 4
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 relationship 13.3 crisis del communications _ car development a aortic.*.