The awkwardly named SLightEnhancerSearch, is a recently released jailbreak tweak that adds a ton of new search options to the stock Spotlight search on iOS. When it was first released, I ran into many issues with the tweak, namely, the search options not showing up on the Spotlight page when enabled.
The tweak was updated today, and the developer seems to have stamped out all of the bugs that plagued the initial release. SLightEnhancerSearch, as silly as its name may be, is a quality jailbreak tweak that many will no doubt find useful...