my website is www.japaneseimportcar.co.uk. it shows too many supplemental index from long time. all supplemental index is very old expired page. when will it show my new index pages.
supplemental pages are the pages that googlebot didn't visit for a long time . i think the solution is finding more links for your site
Or else another possibility is that your content is similar to other sites and it is counted as duplicate.
The best way to avoid supplemental pages is by ensuring that every page within your site uses unique content and provides excellent and relevant information. This way you will have a better chance of having Google determine that your pages are second to none.