import re

keys = ['dmmr', 'deficient mismatch repair', 'hypermutation','lynch syndrome']
words = ['i like apples', 'i have a banana', 'oranges are tasty']

# Create regex pattern
pattern = r'\b(?:' + '|'.join(keys) + r')\b'

# Compile regex pattern
regex = re.compile(pattern)

# Check for matches
for word in words:
    if regex.search(word.lower()):
        print(f"At least one key found in '{word}'")
    else:
        print(f"No keys found in '{word}'")