Abstract: A computer-implemented method for searching a product corresponding to a query from a customer. The method includes: embedding the query to obtain a query embedding; retrieving product information having a product text and a product image; embedding the product text to obtain a product text embedding, embedding the product image to obtain a product image embedding, and combining the product text embedding and the product image embedding to obtain a product embedding, where the product image embedding has a same format as the product text embedding; subjecting the query embedding and the product embedding to a transformer to determine whether the query and the product are relevant; and providing the product as a search result of the query when the query and the product are relevant.