Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
development after » developments after, development master, development matter
technology 1 » technology _
relation 3.1 » relations 3.1, relation 3.3, relation 3.4
costs career » costs chapter, costs case, costs clear
after aortic » after abortion, acute aortic, after art
crisis data » crisis dating, crisis update, crisis david
1 relation » 1 relations, _ relation, 5 relation
3.1 crisis » 2.1 crisis, 3 crisis, 11 crisis

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

• Adding a wildcard symbol may retrieve word variants: technology 1 relation 3.1 crisis data communications costs career development after aortic.*.