Here is the text you can use for : Download GTA San Andreas for PPSSPP (PSP Emulator)
Note: Grand Theft Auto: San Andreas was not officially released for the PSP. The PSP version does not exist. Gta San Andreas Ppsspp Link
However, you can play the (often called "GTA San Andreas for PSP" or "GTA SA PPSSPP") created by fans. Here is the text you can use for