I understand what's wanted. What's wanted is to make sure you have the at least the first 3 books in a series. But, your search also needs to take into account the novellas that get labaled as .5 and if there's another that follows, it's .6. So how would you take those sorts of book into account with your search? You can't.
The solution (IMHO) is to create a new library based on the existing library. Sort on the series column. Then you can manually have a look at what books in a series you have. When you have what fits your criteria you can then copy to the new library.
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