Perhaps you should try some spelling variations:
del communication » cell communication, real communication, cell communications
labor employment » labor redeployment, poor employment, fair employment
transition 1.1 » transitions 1.1, transition 4.1, transition 2.1
technology a » technology 1, technology 3, technology 4
patterns amp » patterns a, patterns all, patterns map
1.1 crisis » 11 crisis, 2.1 crisis, 3.1 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 a transition 1.1 crisis del communication costs labor employment patterns amp.*.