You tried going to https://freetamilebooks.com/genres/%25E0%25AE%2595%25E0%25AF%2581%25E0%25AE%25B1%25E0%25AF%2581-%25E0%25AE%25A8%25E0%25AE%25BE%25E0%25AE%25B5%25E0%25AE%25B2%25E0%25AF%258D/
, and it doesn't exist. All is not lost! You can search for what you're looking for.