Arama Türkçe Karakter Sorunu

<form accept-charset="iso 8859-9">

// ARAMA MOTORU KODLARIN

</form>

<div>Siteiçi Arama</div><div><form accept-charset="iso 8859-9" onsubmit="Arama();return false" action=""><input type="search" placeholder="Ara" id="Search" value="">

<button class="icon">Ara</button>

</form></div>

<script>function Arama(){window.open("https://www.google.com.tr/search?q=site:gizliilimler.org+"+document.getElementById("Search").value.replace(/ /gi,"+"))</script>

<form accept-charset="UTF-8" onsubmit="return false" id="ARAMA">

<div class="tipue_search_group">
<input type="text" name="q" id="tipue_search_input" pattern=".{3,}" title="At least 3 characters" required=""><button type="button" onclick="Arama()" class="tipue_search_button"><div class="tipue_search_icon">
   ⚲</div></button>
</div>

</form>

<div id="tipue_search_content"></div>

<script>

function Arama(){document.getElementById("ARAMA").submit()}

$(document).ready(function() {
     $('#tipue_search_input').tipuesearch();
});
</script>