public BingResponseDto SearchByExpression(string searchTerm)
{
_handler.AddHeader(_subscriptionKey);
var query = $"{_baseAddress}search?q={searchTerm}&customconfig={_customConfigId}&mkt=en-US";
System.Threading.Thread.Sleep(1000);
var response = _handler.GetAsync(query).Result;
var content = response.Content.ReadAsStringAsync().Result;
var result = JsonConvert.DeserializeObject <BingResponseDto>(content);
return(result);
}