Of the two methods described - search vs. clustering - the first one - simpler and not involving ML - is better for this use case. The only reason it seems to g

Of the two methods described - search vs. clustering - the first one - simpler and not involving ML - is better for this use case. The only reason it seems to give worst results is because it's only used with the titles and not the full body (unlike the clustering approach). So I guess machine learning is easier to mis-use than it looks...