$dizi   = array();
$array  = explode(" ",$vbul->title);
foreach ($array as $deger) {
    $dizi[] = "'%".$deger."%'";
}

$ara = implode(' OR title LIKE ', $dizi);

$videolar = $db->tablo("
    SELECT title,thumb,id,hit,zaman,sure
    FROM videolar
    WHERE zaman < ".time()."
    AND id NOT IN ($vbul->id)
    OR title LIKE {$ara}
    ORDER BY zaman DESC LIMIT 20
");