Phrase searching

A search engine may provide an option to search a set of words as a phrase, either by typing in quotation marks (""), by using a command or clicking a button. When they receive this kind of search, the engine will generally locate all words that match the search terms, then discard those which are not next to each other in the correct order. To perform this task, the index must store the position of the word in the document, so the search engine can tell where the words are located. See also Proximity search.