* Uria's Summoning Condition: Uria, Lord of Searing Flames can only be Special Summoned from your hand by banishing 3 "Lord of the Red" monsters from your Graveyard.
* Call of the Haunted & Premature Burial: Both cards are designed to Special Summon a monster from the Graveyard to the field. However, they don't fulfill the specific requirements to Special Summon Uria.
In Summary:
* You need to have 3 "Lord of the Red" monsters in your Graveyard.
* You need to Special Summon Uria from your hand, not your Graveyard.
Therefore, combining Call of the Haunted and Premature Burial will not meet the summoning conditions for Uria, Lord of Searing Flames.