The brake pads on my bike have worn out, so I ordered a new set online, and after I spent a lot of time trying to adjust them, I noticed it won't work as they're not long enough to grip the rim when braking. I'm looking up online, and I can't seem to find anything without those bits and bolts just with a plain long-enough bar.
What name/keyword shall I look up to find what I need?
The Original Brakes:
The New Brake With Bolts That's Short:
The New Brake Without Bolt Which Is Not Safe Enough:
UPDATE: Googling "cantilever" was helpful as @mikes mentioned. They seem to be 70mm pads. Also here's another picture from the pads: