hey, chances are you will not find anything exactly what you are looking for, its not particularly readily available in SE asia to my knowledge - unless u are lucky to find something.
depending on the time of year you visit, some of the international schools will let you work for free - however i'm not sure the deal with accomodation/food. chances are you may have to find your own but its super cheap! generally the schools over there are off for summer same as we are in uk - so you wont really be able to work there june/july/aug. or at least u wont find as many open.
if you just look up international schools on google you'll soon get some names.
same with some of the orphanages, if you contact them direct, some will allow you to work for free.
i wish i could remember some of the names for you but i'm afraid i cant. i know there was a school in chiang mai thailand, phnom penh cambodia & there's definitely international schools in hanoi/saigon in vietnam. often these schools will be teaching in english. i think in cambodia they also had things like the american international school etc.
good luck |