The search engine does not require foreign language words to contain accented symbols, but you may enter them if you want to. What about entering special characters, like ñ or ö? When a word appears to be misspelled, the search engine looks at all the words it knows and offers you a word that could replace it. Yes, the search engine checks your search words against all of the words collected from the web site. A search on "aids" will also return pages containing "AIDS". For example, a search on "MEDLINE" will also return pages containing "medline". No, the search engine is not case-sensitive. A search on "leg" would also retrieve results containing the term "legs". Stemming removes suffixes such as '-ing,' '-ed,' '-en,' and 's.' For example, a search on "coughing" would also retrieve any results that include the word "cough". Stemming: The search engine will also 'stem' your search words. If you search for "native american health", results are automatically retrieved for "american indian health" too. When there is a match between a search term and a word in the thesaurus, the synonym(s) for that word are automatically added to the search.įor example, if you search for the word "journal", results are automatically retrieved for "serial" and "periodical" too. The thesaurus contains a list of synonyms from NLM's MeSH® (Medical Subject Headings) and other sources. Yes, searches are expanded using a thesaurus. Will the search automatically expand my search words to include synonyms? The search engine finds these file types: Example: search on "+lipitor cholesterol" if you only want to retrieve results with the brand name "Lipitor" and the word "cholesterol", and no results with the generic synonym "Atorvastatin" For multiple words, you must use put a + sign in front of each word that must be exact. Use '+' when you require the exact word to appear in all of the results. Example: "mammo*" would find "mammogram" or "mammography" or "mammoplasty" You must enter a minimum of three letters plus the '*' character. Use '*' as a wildcard to search on all words that contain the letters you enter. Examples: "heart defects NOT attack" or "heart defects -attack" Use 'NOT' or '-' when you do not want a particular term to appear in the results. Use 'OR' when you only need at least one of the search words to appear in the results. The asterisk '*' can be used as a wildcard character. The Boolean operators 'OR', 'NOT', '-', and '+' may be used in your query. Are Boolean searching and wildcards allowed? For example, type "health services research" in quotes in the search box. To search for phrases, type the phrase in quotation marks. Site Search Help General Search Help Can I search a phrase?
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