Starting from February 19, 2020 our app uses Shopify API 2019-10 and GraphQL to ensure your partial search request will return the results.
Example: Your product title is "Cherokee Boys Grey Melange Track Pants". So you can search by the complete title "Cherokee Boys Grey Melange Track Pants" to get a result, or by a partial text "Cherokee".
Please Note: You can search the collection by the complete title only.
In the meantime we are searching for solution, so please wait for update patiently.