Advanced search queries:

• title:photo or description:photo - Find entries in which word 'photo' appears in the title or description.
• photo* - Find entries which contain a word beginning with 'photo'. Matches: 'photos', 'photography', etc.
• photo~ - Find entries which contain a word resembling 'photo'. Matches: 'foto', 'phono', etc.
• photo^4 - Boost the relative score of word 'photo' within the query.
• You can combine any all of the above variations in a single query.

Example: 'title:photo*^4 scan~' will find all results which contain 'photo*' within the title, boost its importance 4 times and also look for results which contain a word similar to 'scan'.