[Music] this video will show you how to develop a basic search string using three practical tools Boolean operators quotation marks and the asterisk or star symbol these three tools can be used in most databases and will help make sure you are getting the most relevant results for your research without spending hours staring at a computer screen the first of these tools is Boolean operators which involves using the words and or and not when incorporated into your search strategy these words are always written in capital letters and can be used as often as you need them and retrieves items that include two different concepts together for example an article that talks about caffeine and Sprint performance or is useful when it doesn't matter which concept shows up in your results as long as one concept is included for example searching for teenagers or young adults will likely provide information on similar types of people even though you're using different terms not can remove search results you may not need by filtering out specific words for example if you were interested in information on outdoor walking patterns and kept getting information about treadmill walking you could search for walking patterns not treadmill which would help to remove some of this information from your list truncation involves the use of the star symbol or asterisk this symbol comes at the end of your root word and is helpful if you're using a concept that might have different endings for example by using the star symbol at the end of the word teen you would get results for teen teens teenage teenager or teenagers without having to type in all of these words separately you could even use it for a word like Canada by dropping the a this way you'd get information that used the words Canada Canadian or Canadians by putting quotation marks around a specific concept of phrase you will be able to keep these words together in your search for example if you didn't put the term heart rate in quotation marks you could get articles that talk about either of these words separately bringing up unrelated terms like heart disease or mortality rate finally it's important to keep in mind that there is no such thing as a perfect search don't be afraid to try different options to see which techniques work best for more help with developing an effective search strategy contact your subject librarian or visit any Library service desk