I photographed the plant when I was in Vietnam around 2010. The cousin of my grandfather told me it is a bonsai Tamarind indica but looking at the leaves closely I think that is incorrect.
I don't think it is a sweet tamarid, Pithecellobium dulce either.
Please help id.
SOLVED: Bonsai plant from Vietnam...
grlwonder Perth, Australia Jan 25, 2013