Works fine for me. As you scroll down/go through the pages you'll get looser matches, but the first topic results I get for "USMLE" all seem exact:

1. "ChatGPT Has Passed the United States Medical Licensing Examination (USMLE)" - https://news.ycombinator.com/item?id=34483030

2. "Show HN: Medical LLM API on par with Google Med-PaLM 2. 92% USMLE accuracy" - https://news.ycombinator.com/item?id=37038021

3. "Med-PaLM 2 reaches a score of 86.5% on MEDQA (USMLE)" - https://news.ycombinator.com/item?id=35971465

And for comments:

1. "[...] akin to passing the bar or USMLE could go a long way to solving this problem [...]" - https://news.ycombinator.com/item?id=43315182

2. "[...] very clear that there will be significant disparities by race in USMLE boards in pretty much exactly the same pattern [...]" - https://news.ycombinator.com/item?id=43234441

3. "[...] Suggests MEDIAN USMLE step 1 scores for White, Asian, Hispanic/Latino, and [...]" - https://news.ycombinator.com/item?id=43226207

Generally find HN search works very well, being fast and comprehensive.

I see USMLE related results: https://imgur.com/a/e2JrsQC But when limiting to the shorter timeframe like 'last month' the titles containing 'useless' are returned more. Seems to be the usual too-helpful search engine behavior trying to return possible typos rather than no results.

I get good resultr, but in the configuration section there is an option "typo tolerance", you may try disabling it.