Your search term in this combination is "Auslandsdeutsche".
(Please note the correct german spelling, anything else will lead to incorrect search results...)
Micha
P.S. The "Gebietsdreieck" "Reichsdeutsche Jugend Ausland" is offered in few copies, it is rare.
I don't know who is behind this link, I'm not interested in that either.
It is of course difficult for a non-native German speaker to create such a weblog absolutely error-free, that is in the nature of things, one should make many improvements...