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I notice 'search-meta-only=0' in the url, but how is that enabled from the search page> There is an option to search titles only, but not meta only.

Unfortunately we can't fix this without enormous effort.

It is because of multiple criteria hitting a result (probably here a meta keyword hit combined with a textual hit). We can de-dupe the displayed results to some extent, but to de-dupe counted results would requiring loading up everything across all paginations (not just the tallies the DB gives us), and then doing a full scan.

I'm sure we could improve it, like give accuracy on smaller sets. But the search code is already incredibly complex, so it's something I'd avoid.

Honestly a better long-term solution is if we moved away from MySQL search, to a textual indexing system. There's a tracker issue for that somewhere. These systems pre-index content based on how it's displayed, rather than aggregating criteria in real-time, so don't have the same limitations.

Regarding "only_search_meta" (I fixed your spelling of it ;-) ), that's something our engine supports but I don't think is in the default UI.