In this case, you should consider to create a filter which can block that search term.

Example:
http://screensnapr.com/v/QyKqUA.png

How to do that:

- You can create new table which you will use to store "DCMA search terms"
- Create a function to help you insert search terms to database
- Create a function to check search term. IF marks with one of "DCMA search terms" then change that search term to a Take down notice as i did