无法通过C#、twitter REST API控制twitter搜索结果的大小

我使用C#通过REST API收集tweet。搜索API具有用于控制结果大小的计数参数。

我不知道为什么这个参数在超过15时不起作用。

当count的值小于15时，它工作正常。（3、5，依此类推。）如果超过15条，它仍然只显示15条推文。

var timelineUrl="https://api.twitter.com/1.1/search/tweets.json?q=test&count=17"；

这是我的密码。

        var authHeaderFormat = "Basic {0}";
        var authHeader = string.Format(authHeaderFormat,
            Convert.ToBase64String(Encoding.UTF8.GetBytes(Uri.EscapeDataString("") + ":" +
            Uri.EscapeDataString(("")))
        ));
        var postBody = "grant_type=client_credentials";
        HttpWebRequest authRequest = (HttpWebRequest)WebRequest.Create("https://api.twitter.com/oauth2/token");
        authRequest.Headers.Add("Authorization", authHeader);
        authRequest.Method = "POST";
        authRequest.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
        authRequest.AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate;
        using (System.IO.Stream stream = authRequest.GetRequestStream())
        {
            byte[] content = ASCIIEncoding.ASCII.GetBytes(postBody);
            stream.Write(content, 0, content.Length);
        }
        authRequest.Headers.Add("Accept-Encoding", "gzip");
        WebResponse authResponse = authRequest.GetResponse();
        // deserialize into an object
        TwitAuthenticateResponse twitAuthResponse;
        using (authResponse)
        {
            using (var reader = new StreamReader(authResponse.GetResponseStream()))
            {
                JavaScriptSerializer js = new JavaScriptSerializer();
                var objectText = reader.ReadToEnd();
                twitAuthResponse = JsonConvert.DeserializeObject<TwitAuthenticateResponse>(objectText);
            }
        }
        // Do the timeline
        var timelineFormat = "https://api.twitter.com/1.1/statuses/user_timeline.json?screen_name={0}&include_rts=1&exclude_replies=1&count=5";
        //var timelineUrl = string.Format(timelineFormat, "shj860728");
        var timelineUrl = "https://api.twitter.com/1.1/search/tweets.json?q=test&count=17";
        HttpWebRequest timeLineRequest = (HttpWebRequest)WebRequest.Create(timelineUrl);
        var timelineHeaderFormat = "{0} {1}";
        timeLineRequest.Headers.Add("Authorization", string.Format(timelineHeaderFormat, twitAuthResponse.token_type, twitAuthResponse.access_token));
        timeLineRequest.Method = "Get";
        WebResponse timeLineResponse = timeLineRequest.GetResponse();
        var timeLineJson = string.Empty;
        using (timeLineResponse)
        {
            using (var reader = new StreamReader(timeLineResponse.GetResponseStream()))
            {
                timeLineJson = reader.ReadToEnd();
            }
        }
        //foreach(var tweet : )
        JObject result = JObject.Parse(timeLineJson);
        IList<JToken> results = result["statuses"].Children().ToList();