For earthquake you could try breeding rampardos with a female or male who has some of those moves and hatch the egg to see the results apart from that I remember in my leaf green version I bred a munchlax with fire blast, shadowball and thunderbolt with a snorlax and ditto.
Note: Only male pokemon pass on egg moves. So you need a male pokemon with all those moves. If i remember rampardoes learns all the moves except earthquake so get a male pokemon with earthquake as a breeding partner.