So you've found your way to Level 70 and now it feels like your run is at an end. The side by side set up combined with chocolate makes for a living nightmare of a level.
The focus here is chocolate and combos. Try these tips to up your chances of making it through this one.
Stripes and combos
Work the left side of the screen first. Look for four candy matches to generate stripes. Combine the stripes with other stripes, or even better, with wrapped or sprinkle candies. This takes care of jellies and chocolate on the right side without even having to touch that side of the board.
Keep the chocolate in check
Easier said than done, but try to keep the chocolate under wraps until you need to release it. After it is released, you need to remember that chocolate only multiplies when you don't clear a chocolate on the previous move.
Plan your moves ahead, especially while chocolate still exists on the board. You can clear a chunk of the chocolate with successive moves that stop new chocolate from generating.
As always, look for vertical matches, low on the board. Stick to the left side of the board, per above. This sets cascading matches and generates free combos.