In the autocomplete/deduplication search mechanism, typing small search terms returns results that seem unrelated.

The issue is that some works have very long titles, and many combination of 2/3 letter search terms will find a match in those long titles.

Not sure how to configure ElasticSearch to prevent that, but possibly trying to limit results more to exact matches could work, at the possible detriment of typos leniency

An example was given by CatCat in a comment, and another example was reported on the forums