magento-test/app/code/Magento/Search/Test/Mftf/ActionGroup/AdminDeleteAllSearchTermsActionGroup.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">
    <actionGroup name="AdminDeleteAllSearchTermsActionGroup">
        <selectOption userInput="selectAll" selector="{{AdminCatalogSearchTermIndexSection.selectMassActionCheckbox}}" stepKey="checkAllSearchTerms"/>
        <selectOption selector="{{AdminCatalogSearchTermIndexSection.massActions}}" userInput="delete" stepKey="selectDeleteOption"/>
        <click selector="{{AdminCatalogSearchTermIndexSection.submit}}" stepKey="clickSubmitButton"/>
        <click selector="{{AdminCatalogSearchTermIndexSection.okButton}}" stepKey="clickOkButton"/>
    </actionGroup>
</actionGroups>