My magento (1.7) search always returns the same 15 products, whatever I search for.
This is obviously an index / cache issue, so I am looking for answers about how to debug where the search results are coming from.
I have rm -rf var/cache
and disabled the cache, and re-indexed everything.
This answer: https://stackoverflow.com/a/11413620/347180 fixes the problem.
In my local.xml
I had:
<remove name="catalogsearch.leftnav" />
Which is required for the search functionality.