Scrap a website for company information

For a research project, I would need to find identifiers (a tax code, called "YTJ", made up of 8 numbers) for a list of roughly 7700 Finnish companies. In addition, I would also need to know whether the names of the company have changed over time. I have written some R code, using rvest and RSelenium for the newspaper webpage, and jsonlite for the API, to do this. It would be greatly appreciated if you could alter this code such that I can continue to use it later if the list of the companies I need would change. I also would really like to learn more about how to do this, and from your coding. I found out that the information of YTJ and namechanges is available from two sources: an API (link: [login to view URL]) and a webpage of a Finnish newspaper (which seems actually linked to the same API mentioned above) (link: [login to view URL]). I already wrote some R-code, but haven't finalized it and of course would appreciate if could be continued--however, if it is absolutely useless of course it's great if you write your own. I would look forward to your help and to hearing from you! Below an example of what I have done so far--I'll be happy to clarify more if helpful. ********** On the example of Nokia: 1) First, I try to F - On [login to view URL] I search for "Nokia" - the result page shows a lot of "Nokia"-companies, and their Y-tunnus (also called "YTJ")--this is the number/identifier I need - clicking on for instance "Nokia Oyj", there are a list of characteristics. In the attached two images img1 and img2, you can see the information I would like to have, from the tables "Perustiedot" and "Edellinen nimitieto". The second shows whether there has been a name change in the past. Problems I can't solve: - I could not figure out how to loop through my company list such that if the search engine doesn't find a result, it just goes to the next item in my list. - I didn't find out how I could loop through the results page to get the info of all "Nokias" (for instance, "Nokia Technologies Oy") - the second table of the name changes "Edellinen nimitieto" --some companies have it and some don't, and on different "spots" 2) From the API - on the page [login to view URL] I can type "Nokia" under "name" - When clicking "try it out" I receive a code of Nokia companies (Img3 for what it looks like) - Using jsonlite, I turn this file in to a table of information.. Problems I can't solve: - loop through my company list using this page - the information in json-script includes a URL to the additional info--which should include the namechange. Other problems: - some firms cant be found because there are typos or there are company forms like "Ltd" or "Oy" that are useless and hinder the search results. I tried to just take those formulas out, but was wondering if one could also experiment with substring searches or something.... Attached: - the list of firms as "[login to view URL]" with 7744 names in it - Images of the search outcomes - my R code so far in