Man pages matching name argz_add in section 3:

argz_add.3.en	debian 10 / manpages-dev
argz_add.3.es	debian 10 / manpages-es
argz_add.3.ja	debian 10 / manpages-ja-dev
argz_add.3.en	debian 11 / manpages-dev
argz_add.3.es	debian 11 / manpages-es-dev
argz_add.3.fr	debian 11 / manpages-fr-dev
argz_add.3.ja	debian 11 / manpages-ja-dev
argz_add.3.en	debian 12 / manpages-dev
argz_add.3.fr	debian 12 / manpages-fr-dev
argz_add.3.ja	debian 12 / manpages-ja-dev