Once you have selected some keywords, you can combine them with Boolean operators. Catalogues and databases respond to this type of logic.
| Examples: | ||
| to narrow | online AND privacy | |
| to broaden | internet OR online | |
| to limit | NOT email |
.
| Examples: | ||
| to search for a phrase | "privacy settings" ...only retrieves the two words together | |
| for alternate spellings | e?mail ...retrieves e-mail or email | |
| for different word endings | protect* ...retrieves protect, protection, protected, etc. |