Add yoast seo breadcrumbs categories title [on hold]

i'm add code <?php if ( function_exists('yoast_breadcrumb') ) { yoast_breadcrumb('<p id="breadcrumbs">','</p>'); } ?>

and have code breadcrumbs:

<div class="breadcrumbs"> <span prefix="v: http://rdf.data-vocabulary.org/#"> <span typeof="v:Breadcrumb"><a href="http://www.luatvietan" rel="v:url" property="v:title">Trang chủ</a></span> » <span typeof="v:Breadcrumb"><a href="http://www.luatvietan/tu-van-phap-luat/" rel="v:url" property="v:title">Tư vấn pháp luật</a></span> » <span typeof="v:Breadcrumb"><a href="http://www.luatvietan/tu-van-doanh-nghiep/" rel="v:url" property="v:title">Tư vấn doanh nghiệp</a></span> » <span typeof="v:Breadcrumb"><span class="breadcrumb_last" property="v:title">Thành lập doanh nghiệp</span></span> </span></div>

How to add title to category as

<span typeof="v:Breadcrumb"><a href="http://www.luatvietan/tu-van-doanh-nghiep/" title="Tư vấn doanh nghiệp" rel="v:url" property="v:title">Tư vấn doanh nghiệp</a></span>

Thanks