The additional search options are located below the search field. It contains the "Look in" filter and tabs with basic and specific fields:
Mark rows to enable conditions, switch the value of the Condition column to change conditions (for example, Less than, Greater than, Between), and set the value in the Value column.
All the selected rows are combined using the AND logical conditions, meaning that the catalog entry should match all the selected filters to be displayed in the search results.
For text fields the "Contains" condition means a simple text match when the field should contain any occurrence of the entered text; the "Advanced query" condition enables all search syntax, including logical operators as described here.
The ● (dot) sign on the tab header ("Main ●" on the screenshot above) means that at least one condition from the page is turned on.
