There are plenty of ways to find that trope you're looking for.
- Use our built-in search engine. It's under Tools, click on "Title Search".
- Look up a work that contains a very clear example of the trope you have in mind, then skim the "Tropes" list or the list of pages that link to it (accessible via the "related to" button at the top of the page.)
- Use the Google custom search bar, located at the top of the page.
- You can also add "site:tvtropes.org" to the phrase you're searching for in regular Google, to limit your search to the wiki.
- Read all the way through the basic trope indices, such as Narrative Devices or Characters. If you're new, you'll laugh at this one. Don't worry, it'll happen soon enough.
- Post on Trope Finder, and let other tropers do the work for you!
- Find a related trope; these will often have compare/contrast links at the end of the article.