Search results in the UI can return up to 1000 records. By default, each page displays 50 results at a time. In Advanced mode, you can explicitly set a LIMIT to see more than 50 results on a page. Setting a limit disables pagination and shows up to 1000 records on a single page. The total number of records for the query shows at the bottom right. The UI caps the number of search results at 1000 regardless of mode or the value of an explicit LIMIT. To return more than 1000 records, you must use the Analytics Events Query API.

See LIMIT Clause.