SELECT Champion, RunnerUp
FROM playoffs
WHERE Champion = "Detroit Red Wings"
AND (RunnerUp = "Montreal Canadiens" OR RunnerUp = "New York Rangers");

$result = mysqli_query($link, "SELECT Champion, RunnerUp
                FROM playoffs
                WHERE Champion = '$champion'
                AND (RunnerUp = '$RunnerUp' OR RunnerUp = '$RunnerUp2')") ;

$result = mysqli_query($link, "SELECT Champion, RunnerUp
                FROM playoffs
                WHERE Champion = '$champion'
                AND RunnerUp = '$RunnerUp' OR RunnerUp = '$RunnerUp2'") ;