Perhaps you should try some spelling variations:
strumenti per » strumento per
la didactica » la didattica, a didactic, a didactical
didactica e » didactica de, didattica e, didactica y
e la » a la, e a

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

• Adding a wildcard symbol may retrieve word variants: Strumenti per la didactica e la ricerca*.