Не работает полнотекстовый поиск

<form method="post" action="" name="searchform">
                        <input type="hidden" name="do" value="search" />
                        <input type="hidden" name="subaction" value="search" />
                        <input id="story" name="story" type="text" />
                        <input type="submit" value="" />
                        <div class="clear"></div>
                    </form>

[searchposts]
[fullresult]
 <article class="shortart">
                                <div class="wrapshart">       
                                    <div class="rightshart">
                                        <div class="artinfo">
                                            {date}
                                        </div>
                                        <h2>[full-link]{title}[/full-link]</h2>
                                        {short-story limit="200"} 
                                        <div class="clear"></div>
                                    </div>
                                </div>    
                                <div class="leftshart" style="background-image: url({image-1});">[full-link][/full-link]</div>
                                <div class="clear"></div>
                            </article>
[/fullresult]
[shortresult]
 <article class="shortart">
                                <div class="wrapshart">       
                                    <div class="rightshart">
                                        <div class="artinfo">
                                            {date}
                                        </div>
                                        <h2>[full-link]{title}[/full-link]</h2>
                                        {short-story limit="200"} 
                                        <div class="clear"></div>
                                    </div>
                                </div>    
                                <div class="leftshart" style="background-image: url({image-1});">[full-link][/full-link]</div>
                                <div class="clear"></div>
                            </article>
[/shortresult]
[/searchposts]

[searchcomments]
[fullresult]
<section class="user-comment">
                                <div class="comment-caption"><strong>Комментарий</strong>: {date} [full-link]{title}[/full-link]</div>
                                <div class="wrapcomm">       
                                    <div class="rightcomm">
                                        <div>Написал: {author} &nbsp; </div>
                                        <div>На сайте с: {registration}</div>
                                        <div>ICQ: {icq}</div>
                                    </div>
                                </div>    
                                <div class="leftcomm">
                                    <img src="{foto}" alt=""/>
                                </div>
                                <div class="clear"></div>
                                <div class="comment-content">{text}</div>
                            </section>
[/fullresult]
[shortresult]
<section class="user-comment">
                                <div class="comment-caption"><strong>Комментарий</strong>: {date} [full-link]{title}[/full-link]</div>
                                <div class="wrapcomm">       
                                    <div class="rightcomm">
                                        <div>Написал: {author} &nbsp; </div>
                                        <div>На сайте с: {registration}</div>
                                        <div>ICQ: {icq}</div>
                                    </div>
                                </div>    
                                <div class="leftcomm">
                                    <img src="{foto}" alt=""/>
                                </div>
                                <div class="clear"></div>
                                <div class="comment-content">{text}</div>
                            </section>
[/shortresult]
[/searchcomments]

<form name="searchform" method="post">
    <input type="hidden" name="do" value="search" />
    <input type="hidden" name="subaction" value="search" />
    <input id="story" name="story" value="Поиск..." type="text" />
    <input type="submit" value="Искать" />
</form>