Man pages matching name vfprintf in section 3:

vfprintf.3.de	debian 10 / manpages-de-dev
vfprintf.3.en	debian 10 / manpages-dev
vfprintf.3.es	debian 10 / manpages-es
vfprintf.3.ja	debian 10 / manpages-ja-dev
vfprintf.3.de	debian 11 / manpages-de-dev
vfprintf.3.en	debian 11 / manpages-dev
vfprintf.3.es	debian 11 / manpages-es-dev
vfprintf.3.fr	debian 11 / manpages-fr-dev
vfprintf.3.ja	debian 11 / manpages-ja-dev
vfprintf.3.nl	debian 11 / manpages-nl-dev
vfprintf.3.de	debian 12 / manpages-de-dev
vfprintf.3.en	debian 12 / manpages-dev
vfprintf.3.fr	debian 12 / manpages-fr-dev
vfprintf.3.ja	debian 12 / manpages-ja-dev
vfprintf.3.nl	debian 12 / manpages-nl-dev