[users] corrupted text file for open office

I am having a problem with a file created in open office text. The story is as follows. I am creating the file using greek fonts. I attach some pictures (grafics) and i save frequntly. I work in my usb drive in windows OS. I have an other older file with the same name but different content and d

[users] corrupted file

imported as graphics, but one of them has been copy pasted from ms word. I am using microsoft windows os and I want to recover my file if possible. I do not care about the pictures but for the text. The text is in Greek. Thank you very much in advance Elias Parchas