For example, I would like to use a term "NYC" to include results containing "new york city", "new york" as well, and opposite, when searching for "new york city" files that contain abbreviation "NYC" to be found.
"Netherlands" would find words containing also "Nederlands" (same meaning).
"UK" would find filenames containing "United Kingdom", etc.
Made a quick sketch

I know OR (|) operator can be used (nyc|"new york city"|"new york"), but it's too time consuming and reduces productivity overall (to type all that every time I need to find something quickly).