On EatForCharity, you can search for various types of things in any number of ways. One of the most common things people want to search for is for restaurants offering a certain type of food or cuisine within their delivery range. To do this, from the homepage, click either of the two icons on the right. The one on the far right is to search by food type, and the one to the left of that is to search by cuisine. After that, simply type in the search term you'd like into the search box and press the magnifying glass on the right.
If you'd like to search by cuisine and don't mind seeing restaurants that may not be able to deliver to your area, you can also click on any of the "Cuisine" link at the bottom of the page.
A few things to note: