The Product Idea boards have gotten an update to better integrate them within our Product team's idea cycle! However this update does have a few unique behaviors, if you have any questions about them check out our FAQ.
Thanks for submitting this feature request! Have there been many occurences where you did not get the expected results searching for multiple keywords or using "With the exact phrase" or "With one or more of the words"? As search is a core platform feature, we'll share this with Lithium as a requested improvement and keep you updated!