Use the Advanced Search to set limits on your search.
Search by specific fields to limit where your search terms appear
Title, Abstract, Author, Date
Use specific keywords.
Use OR to find synonyms.
Use "quotation marks" to look for exact phrases.
If you are getting too many results add more concepts or use more specific terms.
If you are getting too few results use fewer concepts or more general terms.
For more help see:
Search Basics guide
Databases Training page for database specific help