I'm not sure exactly what you are asking here but search results & ranking can change depending on a few things.

Can be the amount of defects that will lower you ranking.

Other sellers new listings may go to the top.

If you search by auction only then all the Buy It Now listings will be removed for that search so your listing placements will change.

Maybe word your post a bit clearer on what you mean exactly.I don't quite get it but had a go since you had no answers yet.