Cambodia was in the novelisation.
The script breakdown lists every Predator that's not Scar as 02-Predator, which causes some confusion, but descriptions of the scenes and the listed materials in those scenes correspond to what's in the novel.
For example, when one Predator gets facehugged, the scene listd a torn in half Predator in the props. This is reflected in the novel, where a Predator is torn in half and another facehugged in the same scene.