Bing provides a search API by which you can use the power of bing search in your own application. The base URL for the search API is:

https://api.cognitive.microsoft.com/bing/v7.0/search

The code to integrate the API using Express and Node JS is:

var express = require('express');
var path = require('path');
var app = express();
var request = require('request');
// The main search function
var bing_web_search = function (search, callback) {
    console.log('Searching the Web for: ' + search);
    var options = {
        method: 'GET',
        url: 'https://api.cognitive.microsoft.com/bing/v7.0/search',
        qs: {
            q: search
        },
        headers:
            {
                'ocp-apim-subscription-key': '<YOUR_SUBSCRIPTION_API_KEY>'
            }
    };
    request(options, function (error, response, body) {
        callback(error, body);
    });
};
app.get('/', function (req, res) {
   bing_web_search('<YOUR_SEARCH_QUERY>', function(error, body) {
     if (!error) {
        res.send(body);
     } else {
        throw new Error(error);
     }
   });
});
app.listen(3000, function () {
    console.log('Example app listening on port 3000!');
});
Code language: JavaScript (javascript)

The API Subscription Key can be created at the website:

https://azure.microsoft.com/en-in/services/cognitive-services/bing-web-search-api/

If you want more results, then you can use pagination by adding two query params:
1. count: specifies the number of results to return in the response
2. offset: specifies the number of results to skip