5. Efficient use of Boolean operators

5.1 The implicit AND operator

When you search Google with a query containing several keywords (e.g. properties of composite materials), the engine implicitly uses the AND operator between words, which means that it searches for pages containing all the terms you've entered. It is therefore not necessary to write the AND operator between words.

To enforce the presence of a word, we've seen that you can enclose it in quotation marks.

Alternatively, click on the "Search Tools" tab at the top of the results page. Then,...