Perhaps you should try some spelling variations:
strumenti per » strumento per
la didactics » la didactica, a didactics, _ didactics
alla ricerca » la ricerca, una ricerca
didactics e » didactics _, didactics 2, didactics 3
a ricerca » la ricerca, e ricerca, una ricerca

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

• If you are trying to use Boolean operators, they must be ALL CAPS: strumenti per la didactics e ((a ricerca) OR (alla ricerca)).
• Adding a wildcard symbol may retrieve word variants: strumenti per la didactics e ((a ricerca) or (alla ricerca))*.