Good question however you may be on the money where you got the items; after all South East Asia has the biggest array of Arrow Heads outside Africa. The arrow shafts as you point out are cane/bamboo and again point to the area they were found. Regretably I dont know of a World Arrow Head directory but as I said this is a great question and I hope something turns up.
Regards, Peter Hudson
Note Please see
https://www.fightingsticks.de/en/blo...he-philippines