How to fix broken utf-8 encoding in Python?

I'm not sure what you can do with these kind of data, but for your example in your original post, this works:

>>> mystr = '09. Bát Nhã Tâm Kinh'
>>> s = mystr.decode('utf8').encode('latin1').decode('utf8')
>>> s
u'09. B\xe1t Nh\xe3 T\xe2m Kinh'
>>> print(s)
09. Bát Nhã Tâm Kinh

The only thing that helped me with broken cyrillic string - https://github.com/LuminosoInsight/python-ftfy

This module fixes pretty much everything and works much better than online decoders.

>>> from ftfy import fix_encoding
>>> mystr = '09. Bát Nhã Tâm Kinh'
>>> fix_encoding(mystr)
'09. Bát Nhã Tâm Kinh'

It can be easily installed using pip install ftfy