We need to know the common name for the Thai actor
Wannakit Siriput / Wannakit Sirioput
https://www.imdb.com/name/nm1525067/

The Credit Lookup Tool currently shows 20 entries for "Wannakit Siriput" and 17 for "Wannakit Sirioput", but there is lots of contradictory information in the database.

Wannakit Siriput (4 confirmed)
Belly of the Beast (confirmed by GreyHulk)
Mysterious Island (2005) (confirmed by GreyHulk)
Ong-Bak (2003) (confirmed by Nosferatu)
Sniper 3 (confirmed by GreyHulk)
The Bodyguard (2004)
The Unborn (2003)
The Protector (Tom yum goong) (2005) (UNCREDITED)

Wannakit Sirioput (0 confirmed)
Born to Fight (Gerd ma lui) (2004)
Belly of the Beast
Mysterious Island (2005)
Ong-Bak (2003)
The Protector (Tom yum goong) (2005) (UNCREDITED)
Sniper 3

If I have missed any films in the online database, please let me know.