But for the average person using web search engines, there's a really easy one that a lot of people still don't do, although the search engines have made their technologies smarter, and that's using quotations marks around two or more key words that you want to search as a phrase.

NPR: Tips for Easing Internet Information Overload

Below are the key words or phrases that I always try to learn in the local language before travelling (or you can carry a cheat sheet with you, like the one I used in Paris).

BBC: Nine must-learn local phrases

The software lists every website visited by users and monitors text in every application - on or offline, saved or not - having been programmed to pick up on key words and phrases.

BBC: NEWS | UK | Education | Schools watch for paedophiles

Many law firms now have Web sites programmed with key words so that they come up in searches for phrases like personal injury or toxic chemical lawyer.

FORBES: Lawsuit.com