Since I cannot directly browse or download file-sharing sites to find specific file parts, you will need to check the original source where you downloaded the other parts.
If you tell me (e.g., a specific forum, file-hosting site, or torrent), I can try to help you find the correct search query to locate it. OFSDIC--MW.part5.rar
(like .part1, .part2, etc.) must all be in the same folder to be extracted properly. Since I cannot directly browse or download file-sharing