HTML Domain Form and drop-down TLD

[NitroZ]

How can i integrate this form with the domain search for whmcs.

    <div class="container doamin_search_container">
        <form action="#" class="row m0 domain_search">
            <div class="input-group">
                <input type="search" class="form-control" placeholder="Type Your Domain Name">
                <span class="input-group-addon">
                    <select name="tld" class="e1 form-control searchFilters fleft">
                        <option>.com</option>
                        <option>.net</option>
                        <option>.org</option>
                        <option>.eu</option>
                        <option>.in</option>
                        <option>.au</option>
                        <option>.global</option>
                        <option>.host</option>
                        <option>.shop</option>
                        <option>.gov</option>
                        <option>.edu</option>
                        <option>.forsale</option>
                        <option>.community</option>
                    </select>
                    <input type="submit" value="search" class="">
                </span>
            </div>
        </form>