Search for single words or exact phrases using double quotes, e.g., "ICQ Observation Format". By default, the AND operator is used, meaning all words must be present in the result.

Use operators for more control:

• + : Term must be present (e.g., +Comet)
• - : Term must not be present (e.g., -Draft)
• | : OR operator (e.g., CCD | Visual)

Use wildcards to match partial words:

• * : Matches any number of characters.
  Example: obser* finds observation, observatory, etc.
• ? : Matches a single character.
  Example: h?lp finds help or halp.