Specifically, it references the Japanese title Maou to Yuusha no Tatakai no Ura de (translated as Reincarnated into a Game as the Hero's Friend: Running the Kingdom Behind the Scenes ). The addition of "raw" and "photoshop" reflects how fans search for unedited Japanese manga pages (raws) to clean, translate, and edit using Adobe Photoshop.
[Raw Japanese Scan] ➔ [Leveling & De-Noising] ➔ [Redrawing Backgrounds] ➔ [Typesetting English Text] 1. Cleaning and De-Noising (Leveling) maou+to+yuusha+no+tatakai+no+ura+de+raw+photoshop