We're using Goodlayer's "Goodspace" theme. http://themeforest.net/item/good-space-responsive-minimal-wp-theme-/2278615?ref=GoodLayers
We had results highlighting turned on using
Single term searches, or multiple word searches where only one word had a match, highlighted the results just fine. Multiple word searches where both words got hits wound up having the
<strong> tags get applied all over the page, including around the footer elements that didn't include those search terms.
Unfortunately, due to client reviews this week, we had to turn off the search highlighting, so I can't link to a demonstrable site. But, I figured it would be good for you to know.
[Please post markup snippets between backticks or use the code button.]