PokerStars 10/20 Omaha/8 (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Preflop: Hero is CO with Q , A 9 A
1 fold, UTG+1 calls, 2 folds, Hero raises, 1 fold, SB calls, 1 fold, UTG+1 calls.

Flop: (7 SB) 3 A 2 (3 players)
SB checks, UTG+1 checks, Hero bets, SB folds, UTG+1 calls.

Turn: (4.50 BB) 3 (2 players)
UTG+1 checks, Hero bets, UTG+1 raises, Hero 3-bets, UTG+1 caps, Hero calls.

River: (12.50 BB) 9 (2 players)
UTG+1 bets, Hero raises, UTG+1 3-bets, Hero calls.

Final Pot: 18.50 BB

Results in white below:
UTG+1 has 5s 3d 3c 2c (High: four of a kind, threes).
Hero has Qh Ad 9c Ah (High: full house, aces full of threes).
Outcome: UTG+1 wins 18.50 BB.

i think you could have saved two bets on the river.

For sure, the river raise is a spew.

Against most players, I wouldn't even 3-bet the turn. (I might against a player who is semi-tight preflop and overaggressive postflop, but even then only if I had a very LAG image (such that he wouldn't be too worried about me having AA).)

Against a very loose preflop player, you shouldn't 3-bet the turn (unless you're folding to a cap) because 33 will cap and A3 without a low will just call, and your oppononent will have 33 half as often as he'll have A3, and he'll often have a low when he has A3.

And a good postflop player would not check/raise you here with just an A3 and no low, because if you call it means he's at best splitting, and possibly getting quartered or scooped.