What is a search string?
Complex search strings can improve search results. The more precisely your search string expresses what you're looking for, the more likely the results will meet your research needs.
You need to:
Identify your topic
Choose and enter your search terms
Use truncation and wildcards to include word variations
Link the search terms using connectors such as AND NOT OR
Specify date restrictions
Also refer to the database Help or Search Tips for more information
For eg. when searching the Scopus database click search tips