Following are a number of back-translations as well as a sample translation for translators of Ecclesiastes 2:11:

• Kupsabiny: “Then, I look at everything that I had done and the fights I had fought acquiring those things. Then, I saw that all those things in this world are empty. It is like when a person chases the wind!” (Source: Kupsabiny Back Translation)
• Newari: “After that I thought about all the work that my hands had done,
  with how much pain I had done those works.
  And yet it is all meaningless,
  It is just like chasing the wind.
  There is no benefit at all in this world.” (Source: Newari Back Translation)
• Hiligaynon: “But when I thought well all that I have-done, I realized that all of these have no value; as-if like I am only chasing the wind. (It has) no value at-all the hard-work here on earth.” (Source: Hiligaynon Back Translation)
• English: “But then I thought about all the hard work that I had done to get all those things,
  and none of it seems to bring any lasting benefit.
  It was all like chasing the wind.” (Source: Translation for Translators)