Wrote a small parser, how to find an error?

Question

C++ / C#

There is a code that should parse a link to the newest (in time) news.
Since there are "hot" news that stay at the top, parsing just the first link is not an option.
There is such a code, it works in a timer for 3 minutes, but out of 7 new news items, it returned only 5.
Went through all the code, tell me where to dig?

public string GetLink()
        {
            WebClient client = new WebClient();
            client.Encoding = Encoding.UTF8;
            string result = client.DownloadString("https://crypto.ru/novosti/");
            DateTime dt = DateTime.MinValue;
            string link = null;
            for (int i = 0; i < 4; i++)
            {
                string item = Pars(result, "class=\"posts-grid-news__item-info", "</a>", i);
                string data = Pars(item, "posts-grid-news__item-date\">", "<", i);

                string tempLink = Pars(item, "href=\"", "\"", 0);

                string tempTime = data.Split(' ')[2];
                string tempDate = data.Split(' ')[0] + " " + data.Split(' ')[1];

                data = tempTime + " " + tempDate;
                DateTime tempDT = DateTime.Parse(data);

                if (tempDT > dt)
                {
                    dt = tempDT;
                    link = tempLink;
                }
            }
            return link;
        }