I have a razor macro in a template that will take the users input, find matching results and convert them to JSON for an autocomplete drop down.

This works great with "full" words. For example, if I type "Hello" in my input box, I'll get results, but if I type "Hell" I don't see any results.

If I visit "http://localhost:33968/searchJSON?term=starter", I see:

[{"id":"http://localhost:33968/learn/the-starter-kit/","label":"The starter kit","value":"The starter kit"}]

If I visit "http://localhost:33968/searchJSON?term=start", I see:

[]

Is there a way to append this to allow just a few characters for the search term?

I know I need to modify the query for Examine but just not sure how.

SearchJSON.cshtml

@using Examine
@using Examine.SearchCriteria
@using System.Web.Script.Serialization

@{
    var siteURL = "http://" + Request.Url.Authority;

    var searchTerm = Request["term"];

    if (String.IsNullOrEmpty(searchTerm))
    {
        return;
    }

    var searcher = ExamineManager.Instance.SearchProviderCollection["RazorSiteSearcher"];
    var searchCriteria = searcher.CreateSearchCriteria(BooleanOperation.Or);
    var query = searchCriteria.GroupedOr(new string[] { "nodeName", "bodyText" }, searchTerm).Compile();
    var searchResults = searcher.Search(query);

    List<dynamic> searchResultKeyVals = new List<dynamic>();

    foreach(var result in searchResults)
    {
        searchResultKeyVals.Add(new {
            id = siteURL + umbraco.library.NiceUrl(result.Id), 
            label = result.Fields["nodeName"],
            value = result.Fields["nodeName"]
        });
    }

    JavaScriptSerializer serializer = new JavaScriptSerializer();
    var JSONResults = serializer.Serialize(searchResultKeyVals);    
}

@Html.Raw(JSONResults)

autocomplete.js (the minLength value does nothing in my instance)

$(function() {
    $("#searchTerm").autocomplete({
        source: "/SearchJSON",
        minLength: 2,
        select: function(event, ui) {
            window.location.href = ui.item.id;
        }
    });
});