IOTL the Germans bought what was left of the Spanish East Indies and most of that was taken by Japan in World War One.
Is there any possibility of an independent Philippines declaring war on the German Empire in 1914? The intention would be to get some of the islands Spain sold to Germany back.
That possibility us nil albeit it could have happened as a riding the coat tails of a major power approach. The culture of the Philippines makes it unlikely the nation would have been able to put together the sort of military effort required on a solo basis. This is reflected in the manner in which Aguinaldo's resistance to the American invasion collapsed. This does not mean Filipinos are bad at soldiering. The Battle of Bataan was conducted largely by Filipino troops (65,000 of 75.000 survivors), and their performance can only be described as magnificent. My dad was there and he says not only did they humiliate the Japanese by holding on long past the Japanese goal of 6 weeks, but the Filipinos rendered invaluable assistance to those who went guerilla, at terrible risk to self and family. For insight on this, I recommend "They Fought Alone", John Keats, about Colonel Wendell Fertig and the guerilla campaign on Mindanao. The problem lies with the top down social and economic structure of Philippine society.