| Examples: |
| south america | Search full text for 'south' AND 'america' |
| Exclude | race | Exclude results which contain the term 'race' |
| Proximity | | Match the full text terms, only if they are 5 or fewer words apart |
| Section | | Match the full text terms, only if they appear in document 'headings' (e.g. chapter titles) |
| Title | "south america" | Search for the phrase 'south america' in the 'title' field |
| Year(s) | | Search for documents whose date falls in the range from '1788' to '1822' |
