[Search] Search function not working properly with more than one keyword

[mariaclaudia]

Subject of the issue

The search function seems to not work properly with more than one keyword

Steps to reproduce

Login to the Dataportal Go to "search" Type: "scuole torino"

Expected behaviour

You should see only resources containing both keywords Is it a AND or OR search?

Actual behaviour

It seems that every resources containing "Torino" is displayed In these case 148 resources are displayed.