VirtueMart 3.6.0 10076
Joomla!-Version 3.9.6
We are using the standard joomla search module and the
Search - VirtueMart
Site Plugin 3.6.0 June 24 2019
Text entered in the product description is found whereas text in custom fields is not found (as advertised by the new VM Search Plugin)
Yes that is true. VM's search is not looking into the custom fields.
If you are willing to pay something for a reliable search, that is also searching into the custom fields, please have a look at Custom Filters.
https://breakdesigns.net/extensions/joomla/custom-filters