Hello, firstly thanks for the awesome plugin, makes it way easier to sort post.
I have no specific issues with the plugin, just a suggestion about it : I am working on a wordpress with more than 30k posts and it's sometimes hard to find the right post when using the search.
I tweaked the plugin to do that and just added 'nopaging'=> true (l.57 in functions.php). So when it does the search query, it will return the whole results, not only the 10 first, it's heavier but at least you will find your wanted post. Maybe an option like a radio button to switch between no paging and 10 first results might be a wise choice or maybe create a define to change the limit of the result count.