Following are a number of back-translations as well as a sample translation for translators of Isaiah 11:14:

• Kupsabiny: “Both shall fight against the Philistines in the West
  and they shall plunder things from the people who in the East.
  They shall defeat the people of Edom and Moab,
  and they shall rule over the people of Ammon.” (Source: Kupsabiny Back Translation)
• Newari: “With one stroke they will go down towards the west to the hills of the land of Philistia.
  Being united [they] will plunder the people of the east.
  They will put their hand in Edom and Moab
  and the Ammonites will become submissive to them.” (Source: Newari Back Translation)
• Hiligaynon: “They will-become-one to attack the Filistinhon in the west. They will- also -attack the nations in the east and will-take-away its properties. They will-put-under-their-jurisdiction Edom and Moab, and the Ammonhon will-cause-(themselves)-to-be-under- their -jurisdiction too.” (Source: Hiligaynon Back Translation)
• English: “Their armies will join together to attack the people of Philistia to the west.
  And together they will attack nations to the east;
  they will defeat those nations and take away all their valuable possessions.
  They will capture the areas of Edom and Moab,
  and the people of the Ammon people-group will be controlled/ruled by the people of Israel and Judah.” (Source: Translation for Translators)