The quick search currently only sorts based on the Data that is put into the the field. For Example if I have a Currency value stored as text like "$123,456.78". If I wanted to find that value I would have to include the Commas when searching for that value or it would not find it.
Also another example is if I stored that same currency as a decimal. Then had the list view display it as a currency. If I was to search for that value and include the Dollar sign and commas it would not return any results.
There should be a way when specifying the format of a List view Column that the search should allow many formats to be able to be searched on.