Boolean Logic
Using the power of the AND OR NOT "Boolean operators" in between your searching terms enriches the quality of the information you find.
children AND vaccines = The search engine will find articles about BOTH these terms
children OR teens = use OR with synonyms to broaden the number of hits
children NOT adults = using NOT before a word will exclude a term narrowing the number of hits
Wildcard Symbol: Using the Asterisk * after a search term tells the database to look for several variations of words. For example child* will search for Child, Children, Childhood. Wom* will search for women, woman... some databases use the ! exclamation point for the wildcard symbol.