Man pages matching name proc_bus in section 5:

proc_bus.5.en	debian 13 / manpages
proc_bus.5.de	debian 13 / manpages-de
proc_bus.5.fr	debian 13 / manpages-fr
proc_bus.5.pl	debian 13 / manpages-pl
proc_bus.5.pt_BR	debian 13 / manpages-pt-br
proc_bus.5.ro	debian 13 / manpages-ro