Unfortunately, partial matches aren't supported due to Shopify limitations.
Starting from December 19, 2019, January 23, 2020 our app uses Shopify API
2019-10, where requests that pass a value for the title match only if the value is the same as the complete title and
GraphQL to ensure your partial search request will return the results.
Example: Your product title is "Cherokee Boys Grey Melange Track Pants".