If you have a valid LPR and you went and stayed over 2 years in the philippines and you want to come back here. If you don't have a re-entry permit how can you get a re-entry permit?
Reentry permit can be obtained only by people who have a valid green card. Your only option (other than filing for a green card again) seems to be to ask the US Consulate for a Returning Resident Permit if you can show them a genuine reason for your absence. Note that this would be a difficult application.