My listing doesn't show up but other 'like' listings do

[hblakeside]

I'm selling a set of used tire chains under the heading, "Tire Chains for 13", 14", 15"

tires".  When I try to search for my listing as a potential buyer, my listing doesn't show

up.

On the Ebay main page, in the search box, I type "tire chains", then narrow down the search

results by checking the box for "Used".  My listing doesn't show up.

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Someone was nice enough to point out that my listing does indeed show up if I use additonal filters, but that doesn't account for other listings showing up and mine doesn't when using the original search criteria described above.  What are others doing that I'm not to get their listings to show up?