All configuration options are located at Store -> Configuration -> Mirasvit Extensions -> Search Spell Correction section.
There's only two options for now. In both our extension analyzes customer's request and tries to find product, whose names are most close to the original request.
Enable spell correction - enables automatic spelling correction.
Let us assume, that your store have 'Samsung' products in catalog.
When customer accidentally misspells
Samsang phone, default Magento search will return nothing, since you have no such a product.
But with this option enabled, customer will be notified about potential misspell and will see results for the corrected search phrase
Enable fallback search - enables searching for partial request satisfaction, when there's no results for original request.
Let us assume, that customer puts a phrase
red samsung phone to the search, but you have only
samsung phone product.
If store has no such a product, default Magento search also will return nothing.
But with this option enabled, customer will be notified about error, and and receive results by the correct search phrase