"I didn't say she stole my money"

That sentence can mean seven different things depending on which word in the sentence is stressed:

I didn't say she stole my money - someone else said it

I didn't say she stole my money - I didn't say it

I didn't say she stole my money - I only implied it

I didn't say she stole my money - I said someone did, not necessarily her

I didn't say she stole my money - I considered it borrowed, even though she didn't ask

I didn't say she stole my money - only that she stole money

I didn't say she stole my money - she stole stuff which cost me money to replace

Explanation and discussion at the link as well as at this Reddit thread; both also explain that this phenomenon can occur with almost any sentence and that it varies from language to language