Filter a dataframe based on string column

Question

I have read a text file in jupyter notebook and want to fetch some sentences containing particular words. My code:

import pandas as pd
df = open(r"new2.txt", "rt") 
contents = df.read()
print(contents)
df[df['text'].str.contains('possession|chemical report|S.|chemical examination|act|witness|appeal|dismissed|refused|judgement')]