I suggest you try JetBrains IDEs depending on your tech stack. They have got an incredible search capabilities. You can search for a word/function where it has been used across project, you can find and replace across the project, etc. It's amazing!
Never used JB webstorm before, there will definitely be a learning curve with this new IDE. I am not sure the benefits weigh more than the time i have to get used to new IDE.
In Webstorm, you just press on Shift twice and a popup appears that allows you to search for everything you need. Since the IDE indexed all symbols in your project already, you'll be able to quickly find whatever you need.