I face this problem a lot while searching phone numbers and bank account numbers, when I do remember it partially.
I save a draft in gmail with the content
I am mango. Then I search it, by entering just
mango and it gets me to the draft.
But when I save a draft with some number such as
123987645 and try to search by entering
12398764 i.e just one character missing I fail to find it. Also I failed when I just typed
Out of curiosity I am asking are the algorithms for finding numbers and text fundamentally different? Or I am missing something?