how to use AES block cypher when there are only 47 byte space? If I have only 47 byte for encrypted data, and want to use AES block cypher, is there a method that I could make full use of them, or if I could only use 32 bytes of them, since the block should be multiple of 16 byte?
This is what a block cipher mode of operation is for:


  ...  A block cipher by itself is only suitable for the secure cryptographic transformation (encryption or decryption) of one fixed-length group of bits called a block.2 A mode of operation describes how to repeatedly apply a cipher's single-block operation to securely transform amounts of data larger than a block.[3][4][5]


You might consider:


Using an authenticated mode of operation such as GCM
Offload all the work to an existing library for whatever your purpose is (PGP for data at rest or TLS for data in transit), which will handle all of these details for you.