magento2 – Magento 2 getproduct collection with catalogsearch leftnav

I want get product collection with catalog search left block
I tried this way

$leftNavBlock = $layout->getBlock('catalogsearch.leftnav');
 $list('options') = $leftNavBlock->getLayer()->getProductCollection()->getFacetedData($code);

but here not getting all options getting only some
brand having
tayota,hundai,honda,nissan,lexus. but by using above code tayota,hundai,honda,lexus.
in search result page it showing all options which assigned by products