That's interesting indeed! Note that the description search as well as the image search are both using a knn index on embeddings and not exact search. That help

That's interesting indeed! Note that the description search as well as the image search are both using a knn index on embeddings and not exact search. That helps for finding semantically close by items but indeed for exact reference match it might not be the best solution. Re-indexing the dataset with something like elastic search would give the reference search results you expect.