The search engine does not get confused, it is just not a very good search engine. It could not even find "Sheri's" with "Sheris" without a manually configured alias. And it treats all the clutter in the name as the name of the game. Though this is also on all the devs that clutter their game's names.
Your game title is %28%2B13+Only%29+Espada+de+Sheris+シェリスのけ
That is 7 tokens. Search for espada. And only espada.
Note: I had to censor some things for privacy