Hello Bahar,

This looks like a bug to me.  It's not related to case specifically though.  For example if you select all the text in segment #20 then it finds it all fine.  Also if you confirm the translation for segment #18 and then try a concordance you'll see it finds it, like this (ignore the translation I just copied any text in target for the test):

To explain the problem try another concordance with lower case and you get this:

However, note that I had to fudge this because I found another bug.  Very interesting problem you have here!  If I search for pure lowercase then nothing is found at all in this case.  The reason is because if the letter "i".  Upper case "i" retains the dot, so like this "İ", but Studio won't recognise this at all if I just use a lowercase "i".  So my example above uses lowercase apart fro  the "i"'s.

So, to summarise there are two problems here:

1. If you try to concordance an uppercase word that is in the middle of a sentence then nothing is found, and
2. Studio doesn't handle the special characters used in Turkish for the letter "i"

I guess there could be more letters like this, but that's a job for a proper QA engineer to figure out ;-)  I'll log this with development as a bug.

Thanks you reporting this.

Regards

Paul