Magento - How to add Layered Navigation to Advanced Search?

Question

How can I add Layered Navigation to the Advanced Search result pages?

Magento Version 1.7.

Answer 1

Simply adding following line in catalogsearch.xml advance search results left area helped me to get it visible on my EE site, however I haven't checked it in CE version.

So my full left area looks like this on advance search area on xml file:

Hope it helps others.