sentence: in javanese language , the term also means java ( geographically : tanah jawi , or ethnically : tiyang jawi ) nanyang nanyang ( 南洋 ) ( literally meaning '' southern ocean '' ) , is a chinese term denoting the greater maritime southeast asia region not only indonesia , but also including malaysia , philippines , singapore , and brunei , but usually excluding other mainland southeast asian nations , especially the other nations on the indochinese peninsula .