If you search for "Canon L11121E driver", many Vietnamese driver sites will redirect you to Canon LBP1120 or Canon LBP1210 drivers — and they often work because Canon used the same CAPT (Canon Advanced Printing Technology) driver internally for multiple old laser printers.
Would you like the correct driver link for the actual Canon model you have (if you check the sticker on the printer)?
So the "interesting feature" is:
However, there's an about this specific model number:
This appears to be a Vietnamese phrase: – meaning "install driver for Canon L11121E printer" .