Search keyword text in SharePoint and OneDrive files content

Looking for help on why no results is returning when i try to search for keyword. Any suggestions?

$appID = Get-Content "C:\grAppId.txt"
$tenantID = Get-Content "C:\tenantId.txt"
$certificateThumbPrint = Get-Content "C:\grCert.txt"

Connect-MgGraph -ClientID $appID -TenantId $tenantID -CertificateThumbprint $certificateThumbPrint

$params = @{
	requests = @(
		@{
    entityTypes = @(
	    "driveItem", "listItem", "site"
		)
	query = @{
	    queryString = "password,pass,pwd,credential"
	}
    from = 0
	    size = 25
	    fields = @(
	    "title"
        "description"
    )
         region = "US"
	sharePointOneDriveOptions = @{
	    includeContent = "privateContent,sharedContent"
	}
}
)
}

Invoke-MgBetaQuerySearch -Body $params

Disconnect-MgGraph