Arabic word Searching from Arabic text File

I am working on a Quran application. I have text file(UTF-8) of the Quran (in Arabic language). I want to search my Arabic word from the Quran. I want to write an Arabic word of Quran without Aarabs e.g. Zaber, Zair, shud, Mud and Paish. Aarabs are basically Arabic vowels. Arabic Aarabs detail

Following is the code to search the English word from my ArrayList called testingarray. But for Arabic it's not returning the correct word.

testingarray.get(Index).toString().trim().toLowerCase().contains(word.trim().toLowerCase())) {