Word stemming is turned off by default. If you want to turn on word stemming, here's how:
* Go to the search page, enter any old query to return the search results page
* Under Site Actions, select 'Edit page'
* Locate the 'Search Core Results' web part (usually in the bottom zone)
* From the Edit button, select 'Modify shared web part' * In the tool bar on the right hand side, under 'Results Query Options', check the box labeled 'Enable Search Term Stemming
