There are two ways to find the verses of Quran about your topic using
1. Search for the word in English and it will get the result from translation searching.
Use Quran Dictionary: The other way to search anything in Quran is using Quran Dictionary. Just find out the word for your topic in Quran by either searching or open any verse if you know about that. Then simply tap the word and it will show you arabic root for that word.
Click on that root to get all the verses where this word has appeared in quran and other similar words that are derived from the same root.
Now simple tap the related word and start reading the verses about your topic. It is really that simple, try now. 🙂