Hi nauna,

I have simplified the code. Refer below sample.

HTML

<script type="text/javascript">
    $(function () {
        ApplyAutoComplete($('[id*=txtosearch]'));
        ApplyAutoComplete($('[id*=txtdsearch]'));
    });
    function ApplyAutoComplete(input) {
        google.maps.event.addDomListener(window, 'load', function () {
            var places;
            for (var i = 0; i < input.length; i++) {
                var options = { types: ['(regions)'] };
                places = new google.maps.places.Autocomplete(input[i], options);
            }
            google.maps.event.addListener(places, 'place_changed', function () {
                $(input).parent().find('input').eq(1).val(places.getPlace().formatted_address);
                $(input).val('');
                $(input).parent().find('input').eq(1).trigger("blur");
            });
        });
    };
</script>
<div class="form-group col-md-2 padding2">
    <span class="none">Origin </span>
    <asp:TextBox ID="txtosearch" runat="server"></asp:TextBox>
    <asp:TextBox ID="txtfrom" runat="server"></asp:TextBox>
</div>
<div class="form-group col-md-2 padding2">
    <div runat="server" id="destination">
        <span class="none">Destination </span>
        <asp:TextBox ID="txtdsearch" runat="server" Height="22px"></asp:TextBox>
        <asp:TextBox ID="txtto" runat="server"></asp:TextBox>
    </div>
</div>

Screenshot