Can anybody please help me translate this? English to Latin?

What I want to do is translate from English to Latin three words in nominative (I think they are called nominative). Anyway the words are Strength. Knowledge. Victory. Is Robur Scientia Victoria or Roboris Scientia Victoria. Either of them correct? Since I am asking this question the second time and I got unclear responses I would like to get a translation of the correct words (Strength Knowledge Victory) as they would be placed on some plaque, not an elusive response or a grammar explanation of the words like "Strenght: vis (It is irregular: singular-vis,roboris, robori, vim, vis, vi plural-vires,virum, viribus, vires, vires, viribus)" please. Thanks in advance :)