No, according to NIP01 only single-letter tag are allowed in filter.

Is the "dinosaur" string included in `content` field? The `search` filter generally look only in `content` field.

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I see

I figured the search term was for the “content” field, but wasn’t certain

The problem I have is that this filter doesn’t reduce the size of the request enough (error from relay that request is too large) and I can’t think of a way to filter it down farther without using custom tags that aren’t single letters

If you have any advice, let me know

Thanks for helping!