Bitrix search does not search if the query contains words that are not in the index, how to win?

Question

1C-Bitrix

Good afternoon, I'm doing a search with morphology on Bitrix, such a code

CModule::IncludeModule('search');
$q = $_REQUEST['q'];
$module_id = "iblock";
$obSearch = new CSearch;

$obSearch->Search(array(
    "QUERY" => $q,
    "SITE_ID" => LANG,
    "MODULE_ID" => $module_id,
));

The problem is that let's say we are looking for "Mercedes Bumper", then everything is found, and if we include a word that is not in the index in the line, then we do not find anything, the query "Mercedes Bumper Random" will not return anything, how to win? All api dug up. Thanks in advance.

Answer 1

Remove the search module along with the tables. Install back and re-index the site.
What would be the connection? And sometimes it helps.