Bulk Scouring Multiple Markets on MLS for Mobile Home Parks?

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I believe MLS access is typically for a particular market (or is it whole state?) It happens all too often where a mobile home park is put on the MLS. Usually when they make it on there , they are misplaced themselves ( i.e. vacant land, multi fam, etc) . I was wanting to know if there is a way to try and monitor these with some type of search term in the notes , say mobile home park ( but that might bring homes up in a park) ? Im not well versed in the MLS so thought I would ask those who use it more often. Is there a way or system that I can create in order to be able to monitor listings across 6 states to find any mobile home parks that get listed? This is typically one of the worst places for their exposure since a lot of times local investors won't be interested. Any thoughts are appreciated and thank you in advance!