It is very important to have a variety of keywords to search. This is because some terms will yield more results than others and/or results that are more relevant to your research paper topic. There is no one "correct" search word to use. Different keywords will give you more results:
We use filters because nobody has time to go through thousands upon thousands of results.
Use OR to expand your search results:
Self-driving cars AND safety OR danger
Use NOT to exclude certain search results:
Self-driving cars NOT Tesla
*Note: operators must be in all caps.
If you don't use truncation, wildcards, and/or quotation marks, some databases will look for an exact match to the words you type, and you may miss some relevant materials.
Truncation (*):
child*
brings up: child, children, childhood, and any other word that starts with the root "child." This works in most of the databases.
Wildcards (? or !):
globali?ation
brings up items with the words globalization or globalisation.
Quotation marks ( " " ):
"community college"
brings up only results that contain those exact words in that exact order, not results that contain only one of the terms