Some search engines recognize a short hand method of expressing Boolean operators. Instead of using the ANDoperator you can include + in front of the words that you want the search engine to include in your results. Placing the + sign in front of a word flags it as an important term and assures you that the word will come up in all of your results. Both of these search statements produce the same results. government AND extraterrestrials +government +extraterrestrials Instead of using the OR operator you can place parenthesis around the words. Both of these search statements produce the same results. extraterrestrials OR aliens (extraterrestrials aliens) Instead of using the NOT operator you can place a - in front of the word you want to exclude. Both of these search statements produce the same results. aliens NOT immigrants aliens -immigrants