If you read the posted article and others on this crime, you'll find that the surviving woman has described the perps as Arabs who spoke Arabic.
Miss Wilson told police they had been attacked by two Arab men ... She told Israeli newspaper Haaretz she and her companion had been sitting down, just off the hiking trail, when the two men approached and asked them in Hebrew if they had any water.
Presumably, she means that they spoke Hebrew with an Arab accent.
Describing them as Arabic speaking Arabs is not much help. What is lacking is the details of age, appearance, approximate height, and how they were dressed. The failure to circulate a description is very unusual in a crime of this type.