There are several ways to search for a question in editor–via the left side bar you can enter in the id number, search section, title, or even body. Just click on what you want to search by and enter in the required fields to find what you want. 
Please know that if your title has any special characters in it (ie -, $, etc) it might serve you to relax the title search.
Instead of searching for title 'test-123', consider looking for just 'test'.
