I want some books for iit and olympiads(chemistry, physics, astronomy)Right now I am having jd lee, solomen and fryhle , n avasthi and sk goyal ... I want some good books for physics and maths and for olympiads.

You can look for Disha and trishna books.those are really helpful for Olympiads,ntse,.. I cleared Ntse and MSI with their help

I want books for iit not ntse......and olympiads and kvpy.olympiads like rmo international physics Olympiad international chemistry Olympiad and astronomy olympiad