I want to find a way of searching online for $100-$500 buy-in Omaha hi/lo tournaments, specifically limit or pot-limit. These are relatively rare compared to NL Holdem. These tourneys are usually part of some casino series or classic or perhaps a WSOP or WPT circuit series. I can only find these piecemeal. They are not the weekly tourneys that often feature buy-ins of less than $100.

Sites like Poker Atlas and Card Player don't seem to offer search results the way I would like. Doing this search on Poker Atlas using January 1, 2017 start date and $100-$500 buy-in for O8 in Las Vegas gives zero results. Maybe that is accurate, but I don't think so. I would like to expand that search to the entire US, but I can't figure out how.

I also need a few months of lead time to budget and plan travel, so the search has to be a few months into the future. I have played at the Aria, Venetian, Orleans, etc., so I am aware of some specific events that happen on an annual or quarterly basis, but I would like a more complete national awareness.

Thanks