Hi ChangingSeasons,
I think when a lot of the searching is done it is by
Time Remaining Low -> High as I think it is the default setting. When using that search items are shown in this order:
Time Remaining for those counting down
Run Until Sold
On First Bid
With this in mind unless they are in the "Featured, 60 Minute, Happy Hour & Frontpage Auctions" most people will never get to the "On First Bid" and in a lot of categories they will never get to the "Run Until Sold" depending on how many listings are in the category.
I suggest you do some searches in categories that would include your items and see where they are as this would give you an idea if they are down so deep people are not likely to get there.
Hope this helps,
Peggy