do you need to hand the coupons over in a special order to get this?

I have *never* been able to use a BOGO coupon with additional coupons at any store I frequent- drug/super/grocery. Even the most friendly of cashiers give me an “are you serious look?” when I’ve tried to do this I’m always told that the one BOGO coupon applies to both items, and because I can’t use more than one coupon per item, all I can use is the BOGO coupon. Is there a place in the coupon policies that specifically states this is allowed?

Trouble with website maybe, I waited 15 minutes for it to print and got nothing.