Search using Google.com
To enter a query into Google, just type in a few descriptive words and hit the 'enter' key (or click on the Google Search button) for a list of relevant web pages. Since Google only returns web pages that contain all the words in your query, refining or narrowing your search is as simple as adding more words to the search terms you have already entered. Your new query will return a smaller subset of the pages Google found for your original "too-broad" query.
Google is the World's favourite Search Engine
The Basics of Google Site Search
Choosing Keywords for Google Site Search
For best results, it's important to choose your keywords wisely. Keep these tips in mind:
Try the obvious first. If you're looking for information on Picasso, enter "Picasso" rather than "painters".
Use words likely to appear on a site with the information you want. "Luxury hotel London" gets better results than "really nice places to spend the night in London".
Make keywords as specific as possible. "Antique lead soldiers" gets more relevant results than "old metal toys".