Most plausibly, but typed in a hurry or deliberately obfuscated. Thus, the user is searching for a “full movie of Saezuru Tori wa Habatakanai: Don’t Stay Gold” with the tag “mtrjm” (see Part 4).
: This is the crucial piece. MTRJM appears to be a username or release group tag from a now-inactive Russian or Ukrainian fansubber active around 2021–2022. They specialized in "uncensored" and "high-bitrate" encodes of BL OVAs that never left Japan. If your file has mtrjm in the name, it likely means: fylm awfa saezuru tori wa habatakanai don39t stay gold mtrjm