I notice that kendo has a new feature to customize the noDataTemplate. Then you can use that to allow user adding a new item when there is no match.
Just like this example: http://demos.telerik.com/kendo-ui/multiselect/addnewitem
But what if I want to add a new item of partial match. Say you have "Chai" in the options, but I want to add "Cha". Can we do that with kendo?