You may find such high yield bonds with C- or worse credit ratings, those are risky ones to avoid. But if B, BB, or even better ratings are acceptable risks for you, then you could find some good candidates. You can conduct research on bonds at some of the large brokerage houses such as Fidelity.
Some good examples -
Global Marine's 7% coupon due in 2028 bond has S&P's BB+ credit rating and 13.172% yield to maturity.
Transocean Offshore 7.45% coupon due in 2027 bond has S&P's BB+ credit rating and 12.048% yield to maturity.
Caution: generally, ordinary investors know little about bonds, it's best to avoid investment products you are not familiar with.
The Bottom Line
In summary, we have discussed 3 areas where an ordinary investor could find investment products with respectable 10% plus yields. Due diligence is always required if you desire to achieve such high yields safely in today's low interest rate environment.