The default "search" keyword-matching gives equal weight to matches found in a product's name, model number and manufacturer's name, as well as those matches found in a product's meta-tags and meta-tag descriptions. Equal weight is also given to matches found in a product's description (if the Search in Product Descriptions box is checked).
This plugin makes a slight update to the processing, giving priority (i.e. they're displayed first) to those matches found in a product's name. The plugin requires Zen Cart v2.0.0 or later and a PHP version 8.0 or later for its proper operation
Zen Cart Support Thread: https://www.zen-cart.com/showthread.php?218702-Search-Prioritize-Matching-Names-Support-Thread
Zen Cart Plugin Download Link: https://www.zen-cart.com/downloads.php?do=file&id=2038