magento-test/app/code/Magento/Newsletter/Test/Mftf/ActionGroup/AdminSearchNewsletterTemplateOnGridActionGroup.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">

    <!--Search Newsletter Template On Grid -->
    <actionGroup name="AdminSearchNewsletterTemplateOnGridActionGroup">
        <arguments>
            <argument name="name" type="string"/>
            <argument name="subject" type="string"/>
        </arguments>
        <fillField userInput="{{name}}" selector="{{AdminNewsletterGridMainActionsSection.name}}" stepKey="filterName"/>
        <fillField userInput="{{subject}}" selector="{{AdminNewsletterGridMainActionsSection.subject}}" stepKey="filterSubject"/>
        <click stepKey="clickSearchButton" selector="{{AdminNewsletterGridMainActionsSection.search}}"/>
        <waitForPageLoad stepKey="waitForNewNewsletterTemplatesPageLoadedAfterFiltering"/>
    </actionGroup>
</actionGroups>