Dim html = <ol class="list-data-b">
<li class="in-ttl-b">(a) kanji; a Chinese character [ideograph]
<ul class="list-data-b-in"><li class="text-jejp text-c"><span class="ex">漢字で書く</span></li><li class="text-jeen text-c">write in <i>kanji</i> [<i>Chinese characters</i>]</li></ul>
<ul class="list-data-b-in"><li class="text-jejp text-c"><span class="ex">常用漢字</span></li><li class="text-jeen text-c"><i>Chinese characters</i> for everyday use (in Japan)</li></ul>
Dim HTMLDoc As HtmlDocument = New HtmlDocument()
HTMLDoc.LoadHtml(html.ToString())
Dim ols = HTMLDoc.DocumentNode.SelectNodes("//ol[@class='list-data-b']")
For Each ol As HtmlNode in ols
Dim outerLi = ol.SelectSingleNode("li[@class='in-ttl-b']/text()[1]")
Console.WriteLine(outerLi.InnerText)