AND – Use between words when you want both of them to appear in the same article
OR – Use between words when they are interchangeable, AKA synonyms or related terms
Parenthesis () – Use around words that are combined with OR to indicate a group that is interchangeable
Quotations “” – Use around phrases, or words that must appear together
Asterisk * - Use to get multiple endings of a word.
("Social Media" OR facebook OR twitter) AND Productivity AND (earning* OR profit OR loss)