The largest word on this page is how many characters? Consider bromidrosiphobia, which consists of 16 characters.
How many words can you make using this list? One can create 9 words with the combination you searched for.
What is the highest score you could get in Scrabble using this list of words that start with 'b' and include 'iph'? You could make biphenyl scoring 18 points in Scrabble.