"Kenzul Du'aher" sounds like a Turkish transliteration of an Islamic text. The correct title might be "Kenz al-Du'a" or similar, which refers to a popular compendium of prayers and supplications in Islam. "Kapıyı açan" translates to "opening the door", so maybe the title is "Kapıyı Açıp Muradı Duaları" or something like "Supplications to Open the Doors of Desires".