The 'Find Coupons' function assist you to search the available coupons your order & account you are eligible to utilize.
The coupons are unique to every customer's cart order & account.
For example, I have added a Fitbit watch that is part of a Mother's day promotional campaign (that is offering a $30 off) into my cart. Hence, the Find Coupons' function will prompt me the availability of this coupon.
It's that simple!