ehsan abidi ashtiani

You should consider converting the PDF to Word with an external tool if Trados isn't giving you the result you want... or even better go back to your client if possible and ask for the original source file and not the PDF.  PDFs can be very difficult since they are not really designed for translation.

I had used Foxit, it`s alittle better ,but this error happens at some further lines on the converted file.

I cannot find such setting in that software either 

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Ehsan Abidi ashtiani

I'm not familiar with Foxit, but I do know that Abbyy Finereader seems to be the "industry standard" for converting PDFs to Word for subsequent translation. But even this would require good knowledge of how to use the conversion software to obtain a quality end result.  I think you just need to do a better job on the intended source.

Oh, really? Strange - use table for example. Or create a separate text block for each column, doing the left column first and the second column then. Abbyy Fine Reader will certainly allow you to do that.

You mean I create a table for each page and move the content to that table?

Apart from how can I create table in Foxit, this solution needs a lot of effort.

You mean I create a table for each page and move the content to that table?

Apart from how can I create table in Foxit, this solution needs a lot of effort.

You open the PDF in your OCR and go page by page, checking the layout assumed by the software.

And please pardon my French, but dealing with PDFs is the most frequent asked question in any translator forum I know. There are so many post and nearly essays about it and why it is not possible to deal with these like with any other editable format. PDF has been invented by Adobe for one purpose only: to be viewed in the same way on all computers. NOT for editing. So expecting any tool on the earth to easily deal with PDF is at least naive. Yes, dealing with PDF is a lot of effort and this will not change. PDF is not for editing. Period.