That's how search is designed to work. You shouldn't rely on partial title searches, especially for very generic terms. Please promote your game outside itch.io, too. But if it can be found, that means it's indexed.
Oh alright. The only thing is, for 6 months-1 year, basically since i posted my game, i could find it by searching keywords like "ragdoll" and "torture". Guess the page got an update. Also, some un-popular old games like "Across the Ragdoll-verse" with only 1 comment shows up when i search up ragdoll. Guess i thought popular games were more on top