About structured searches
Structured searches work by comparing criteria you specify to various properties of objects. These criteria can be based on object metadata as well as on object content. You can also specify whether objects need to meet any
or all of the specified criteria.
To perform a structured search, you use the Structured Search page of the Search Console.

Within a single structured search, you can specify multiple criteria. With the exception of the content class property (metadata query engine only), each criterion has the form:
propertyoperatorvalue
On the Structured Search page, you select both properties and operators from dropdown lists. Depending on the property, you either select or type the value.
Object Size less than 2049 Namespace is finance (europe) Title contains budget proposal Shredding is not Shred on Delete Ingest Time before 2011-11-30T14:55:55-0500
After creating a structured search, you can change it to an advanced search by clicking Show as advanced. The Advanced Search page opens and shows the specified search criteria translated into the search query language.