1. Switch to 'Full text' view
If you want to find a piece of text throughout the review rather than just in a section of it, you need to switch to 'Full text' view (click on the tab on top of the left-hand side menu).
2. Use the 'Find' function in your browser
To find all the places where a piece of text appears, you can use the 'Find' function in your browser (use the Ctrl + F keyboard shortcut to open it).