As per your ST Category Rank which is 804 and previous year cutoff, the colleges you get are:-

• Sardar Vallabhbhai National Institute of Technology, Surat
• National Institute of Technology, Andhra Pradesh
• National Institute of Technology Durgapur
• Dr. B R Ambedkar National Institute of Technology, Jalandhar
• Motilal Nehru National Institute of Technology Allahabad
• National Institute of Technology Goa
• Maulana Azad National Institute of Technology Bhopal
• National Institute of Technology, Kurukshetra
• National Institute of Technology, Jamshedpur
  

To know more about your chances of getting other colleges check out the college predictor link below:

https://engineering.careers360.com/jee-main-college-predictor