The search string you provided seems like an from a download page where the filename got partially overwritten or concatenated (e.g., t310 twrp 3.1.0-1 tar md5 → t310twrp3101tarmd5 ).
: You can create "Nandroid" backups, which are bit-by-bit snapshots of your entire system. Prerequisites for Flashing t310twrp3101tarmd5 2021