Search all fields for a keyword using Sitecore PowerShell Extensions.

FindKeywordInAllFields.ps1

<#
    .SYNOPSIS
        Find all of the items and fields which contain a specific text.
        
    .LINK
        https://vandsh.github.io/sitecore/2018/01/27/spe-search-replace.html
#>
$rootItem = Get-Item -Path "master:/sitecore/content/Home"
$needle = "nurse"

@($rootItem) + @($rootItem.Axes.GetDescendants() | Initialize-Item) | 
    ForEach-Object {
        $currentItem = $_
        Get-ItemField -Item $currentItem -ReturnType Field -Name "*" `
            | ForEach-Object{ 
                if($PSItem.Value.Contains($needle)){
                    [pscustomobject]@{
                        "Name"=$currentItem.DisplayName
                        "ItemId"=$currentItem.ID
                        "FieldName"=$_.Name
                        "ItemPath" = $currentItem.Paths.Path
                    }
                }
            }
} | Show-ListView


$criteria = @(
    @{Filter = "DescendantOf"; Value = $rootItem.ID },
    @{Filter = "Contains"; Field = "sxacontent"; Value = "nurse"}
)
Find-Item -Index sitecore_master_index -Criteria $criteria | Initialize-Item | 
    Show-ListView -Property @{"Label"="DisplayName";Expression={$_.DisplayName}}