I use the following code to filter blog posts by tags.

var matchingNodes = Tag.GetDocumentsWithTags(tagToFind);
        <div class="posts-list">

         <ul>
              @foreach (var node in matchingNodes)
              {
                dynamic dn = new DynamicNode(node.Id);
                   <li><a href="@dn.Url">@dn.Namea>li>
              }
          ul>
        div>

When i try to filter tags with GetDocumentsWithTags method i usually get filtered nodes. However if the tags contains Turkish specific characters    ,  no results returned. 

Do you have any idea how to fix this?

Thank you in advance.