Extra precise searching can be used for exact titles or phrases, known authors, items or companies. For exact phrase searching, surround your search terms with quotation marks. This will often find documents with the words in precise order. If a subject or keyword search is not retrieving the information you seek, you may need to do a more complex search. This may include boolean logic, wildcard characters, multiple searches, or rare words and concepts.
Boolean logic works in most search engines.
Others allow wildcard use only at the end of a term. Multiple Searches Try multiple searches using variations of words and synonyms for your topics. Most search engines automatically look for plural versions of terms. If you have one rare word in your subject, try searching that word alone in metasearch engines. What to do with the Results Relevancy ranking Evaluate your results quickly.