Perhaps you should try some spelling variations:
communication das » communication dans, communication des, communication data
development acute » development act, development route, development age
el communication » cell communication, real communication, 3 communication
creation 3.1 » creation 3.4, creation 2.3, creation 4.2
acute aortic » after aortic
3.1 crisis » 2.1 crisis, 3 crisis, 11 crisis
das system » bus system
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 _ creation 3.1 crisis el communication das system development acute aortic.*.