Currently, the search function on the SharePoint List Item dropdown/lookup field is extremely prohibitive; case sensitive, requires left to right entry and does not allow search of characters and/or words within the search word. Example, if searching for "ABC123 Company", the search for this entry needs to be exactly "ABC123 Company" and "abc123 company", "abc" or "123" will not yield results.
Idea is to remove case sensitivity AND remove requirement for left to right character entry or allow for wildcards.