To search for exact phrases, put the words between quotation marks.
This is particularly useful when your concept consists of two or more words.
Examples
"advertising campaigns", "digital marketing”, "project management", "soft controls", "cost accounting", "customer journey".
Searching with quotation marks will give you results that contain your search terms next to each other and in the order given by you.
Searching for the terms without quotation marks will give you results that contain both terms but they may be in different sentences.