The standard search-engine syntax is supported:

• Boolean operators AND and OR can be used to combine terms
• By adding a +, a term can be made required
• By adding a -, a term can be excluded from the results
• By quoting terms, you can ensure the whole string must match

In addition, the following fields can be searched by specifying the field name and a colon, e.g. site:nytimes will search for results from the nytimes.com domain.

• title: The title provided by the original site
• caption: The caption provided by the original site
• description: The description provided by the original site
• summary: The summary written by Hasnain
• source_url: The full source url
• site: The original source website