How to enter a query
The text search engine allows queries to be formed from arbitrary Boolean expressions containing the keywords AND, OR, and NOT, and grouped with parentheses. For example:
- information retrieval
finds documents containing 'information' or 'retrieval'
- information or retrieval
same as above
- information and retrieval
finds documents containing both 'information' and 'retrieval'
- web*
finds documents containing words starting with 'web'