The use of the words and, not, and or in a search engine is known as

Boolean search terms.

Explanation:

Boolean exemplifies a kind of research that permits the users to combine keywords with modifiers or operators such as and, not, and or in order to produce more accurate and effective results. It assists to organize a particular search with these combination words and also to create a number and range of search operations. Boolean search creates specific threads to search that aids the users to save time and effort. Thus, the use of words and, not and or in search engine is defined or known as Boolean search terms.

a) a master's degree

hope it