PHP MySQL PDO and using OR

Question

I have a MySQL database and a query. It does not work as expected. If I write two queries, they will work just fine. I would like to modify my code and avoid using several queries.

$sql = $this->yhteys->prepare("SELECT ki_ka_ot.a_p1id
FROM ki_ka_ot, ki_il, ka_il, ka, ka_ki, ka_ki_ot, ki_ka
WHERE
(
ka_ki_ot.match = ? AND
ki_ka_ot.a_points = 5 AND
ki_ka_ot.a_points > ki_ka_ot.b_points AND
ki_ka_ot.endtime > '0000-00-00 00:00:00'
)
OR
(
ka_ki_ot.match = ? AND
ki_ka_ot.a_points < 5 AND
ki_ka_ot.a_points < ki_ka_ot.b_points AND
ki_ka_ot.endtime > '0000-00-00 00:00:00'
)
AND ki_ka_ot.a_tid = ki_il.id
AND ki_ka_ot.a_p1id = ka_il.id
AND ki_ka.id = ki_ka_ot.chart_id
AND ki_ka.charttype_id = ka_ki_ot.charttype_id
AND ka_ki_ot.charttype_id = ka.id 
AND ka_ki_ot.round_id = ka_ki.id
AND ka_ki_ot.id = ki_ka_ot.place_id
LIMIT 1");

$sql->bindValue(1, 20, PDO::PARAM_INT);
$sql->bindValue(2, 19, PDO::PARAM_INT);
$sql->execute();

$res = $sql->fetch(PDO::FETCH_ASSOC);