Check with the Philippines mail service. Most countries allow shipping of seeds, but each have different customs requirements and you'll likely need a standard permit if at all.

Here is a link that might be useful: Importing Seeds into the Philippines

Hey you can easily find these seeds from internet and order them. It is no issue at all. Try this famous link and buy whichever seed you want. :)

http://cgi.ebay.com.my/60-Oriental-Vegetable-Seeds-Round-Eggplant-F1-HYBRID_W0QQitemZ130353317977QQcmdZViewItemQQptZUK_HomeGarden_Garden_PlantsSeedsBulbs_JN?hash=item1e59a9c859

do let me know when you got them ;)