$both = wc_get_products( array( 's' => '60x60+60х60', 'limit' => -1, 'category' => array( $category->slug ) ) );
$english_x = wc_get_products( array( 's' => '60x60', 'limit' => -1, 'category' => array( $category->slug ) ) );
$cyrillic_x = wc_get_products( array( 's' => '60х60', 'limit' => -1, 'category' => array( $category->slug ) ) );

$both = 94
$english_x = 94
$cyrillic_x = 231