The discussion revolves around configuring the minimum search term length in Discourse. Rob_Nicholson wants to know if it’s possible to set a shorter minimum search term length for local topic searches. zogstrip suggests changing the “min search term length” site setting, but notes that it’s a site-wide setting. Rob_Nicholson prefers a local topic search setting. As an alternative, zogstrip and cpradio suggest using the browser’s default search by pressing CTRL/⌘ + F twice, which isn’t limited to the loaded content in the DOM.
You want to change the “min search term length” site setting 
Is that a site wide setting? Would prefer it to just effect local topic searches.
It is a site wide setting (ie. works for all types of search).
If you want to search on the current topic, you can also press CTRL/⌘ + F twice and use the browser’s default search.
Does Ctrl-F require you to scroll to the very last post in order to download all the posts?
No, on long posts, Discourse will use its in-topic search when you press CTRL+F, you can press it again to get the browser one, which would be limited to what is loaded in the dom. The Discoruse in-topic search is not limited to what is in the DOM.
