Below are some other search techniques you may find useful:
Truncation: adding a symbol* to a root word to locate various forms of that word
Examples:
teen* would locate teen, teens, teenage, teenager, teenagers
child$ would locate child, children, children's, childhood
*Note: Symbols may vary depending on the resource you are using, e.g., *, $, !, or #
Wildcard: Substituting a symbol for a letter in a word to locate various forms of that word
Example: wom!n to locate woman and women