Translations:Help:CirrusSearch/257/en

Search results are the result of a Y/N evaluation for every page in a query's given search domain. Adding another word, phrase, or parameter filters that same query. A refined set of search results is needed when every title in the search results will be worked manually. (Ranking is largely irrelevant here.) Filtering applies critically with regex searches; you want as few pages as possible before adding a regex (because it can never have a prepared index for its search).