How can get all my receipts

Receipts for what? I can think of at least 5 different services that issue receipts and it depends up which kind you need.

If you're referring to iTunes and App Store receipts, Apple sends you a receipt by email for each thing that's charged to your account. This may overlap with your purchase history:

Click on the link to 'See your purchase history in the App Store or iTunes Store' [iOS, computer, or web] - Does not include purchases made by others under Family Sharing; those have to be checked from their accounts. --> http://support.apple.com/HT204088

If you mean something else then please tell us what.