for when you need all terms in a search string included in the articles you retrieve
for when you have more than one way to say the same thing
if either of the terms shows up in articles retrieved it will be a useful article
wild-cards for getting a root word and all of it's endings
for example: communicat* will search for communication, communicating, communicates, communicated, communicator, etc.
After typing your search into Google, click on the word NEWS which is directly below the search box: