Enhanced Search / Custom Search

[ghost]

Select Chosen is working great as expected but based on things from end users I would like to define any custom search or if anything implemented already please let me know.

My Option Values
Gene Eva Convenshun
Amanda Hug
Polly Ester Undawair
Polly Wannakrakouer

When I start search with work "Polly "
I got 2 results:
Polly Ester Undawair
Polly Wannakrakouer

But when continue to "Polly Und"
I would need "Polly Ester Undawair" i.e. split words search.

I have tried "search-contains" but no luck, please let me me how ca I do that or any custom method I can implement?

https://jsfiddle.net/54k0rLoz/