So, it seems you're searching for a PDF resource that involves practical or applied German grammar, possibly with an emphasis on phonetics or sounds (given the "fono" part).
At its core, the popularity of this specific Fono publication stems from its ability to bridge the gap between theoretical rules and everyday usage. German grammar is notorious for its intricate cases ( cap K a s u s fono+uygulamali+almanca+dilbilgisi+pdf
Fonetik ve Uygulamalı Almanca Dilbilgisi Fono : This could refer to a brand,
Fono Yayınları's " Uygulamalı Almanca Dilbilgisi " is one of the most established and preferred self-study resources for Turkish speakers learning German. So, it seems you're searching for a PDF