You can use & / and ! in your search to perform boolean operations, for example:
ital* retrieves Italy, Italian, etc
italian & opera retrieves items with BOTH words
italian / opera retrieves items with EITHER word
italian opera retrieves the phrase "Italian Opera"
You must have spaces on either side of the & / or ! for them to be correctly understood.
If you enter multiple keywords in a box without using boolean operators, they will be treated as a phrase.
You can use * at the end of a word to perform truncation.