Restrict search to product set
This would allow to exclude products from the search (e.g. products that are not available anymore but that are good for SEO).
Leonidas Lainis commented
How can "products not available any more" be any good for SEO? Maybe with a redirect to a similar product? If yes, why to exclude them from the search results?
This idea is good! I also have been learning Search Engine Optimization but have got to know that the technique is extremely complicated so hiring a professional team will be very important for me to accomplish all of my goals. I would like to hire seo consulting service for my business from http://visiblefactors.com/seo-consulting/.