Know you've read it, but can't remember where?
... or perhaps you're researching a particular subject? Search for it.
All search matches act as if there were a logical "OR" between your keywords, where verses that contain all or most of your terms will float to the top of the search results. For instance, searching for the keywords:
Father Heaven Samaria
...will return verses that have any of those terms, but verses that have all three words (in this case II Chronicles 28:9) should float to the top of the list.
Searches do not yet match on different tenses (or synonyms) of a word. For example, searching for the keyword, "wife", will not yet hit on verses that use the word "wives". Searching for "wine" would not hit on "fruit of the vine", etc.