Man pages matching name zabbix_server in section 8:

zabbix_server.8.en	debian 10 / zabbix-server-mysql
zabbix_server.8.en	debian 10 / zabbix-server-pgsql
zabbix_server.8.en	debian 11 / zabbix-server-mysql
zabbix_server.8.en	debian 11 / zabbix-server-pgsql
zabbix_server.8.en	debian 12 / zabbix-server-mysql
zabbix_server.8.en	debian 12 / zabbix-server-pgsql