Return all close match values in a Map
<p>I have map where each key is a String.</p>

<p>To access a value I can use the <code>.get</code> method of <code>Map</code>. If I want to return anything that matches the key for example : <code>"one, onetwo, onetwothree"</code> , get all values that contain the String <code>"two"</code> so in this case return <code>"onetwo, onetwothree"</code>. Is this possible using a <code>Map</code> ?</p>

<p>Im currently using a List and iterating over each String and checking if the String contains the value I am searching for.</p>
