1、No matter how much I drank coffee, I did not sleep.
2、“有什么吗?” we need to know what it's earlier and later,then we can understand this sentence. In this sentence, the word "什么“ means "something".
3、In some situation, we should use the word ”吗“ to indicate we are asking a question.
你有手机。You have a phone。
你有手机吗？Do you have a phone ?
sorry, my english is not very well ,but i hope this can help you.