Look for keywords that could be similar to the one you are using. "vizio ~ tutorial". (The tilde ~ is usually the left top key, next to the numeral one.) Google will search for similar keywords like guides, how tos, manuals etc.
Have a math problem, type "sqrt(100)" for the square root of 100.
How to find a site that your company has blocked - "cache:shubnell.com". (of course none would block my site.)
Looking for a specific title - "intitle: papamurphys".
Looking for pictures, type in something like "shadows" then click on the 'images' word on the left of the results page. It will show all pictures, instead of web pages.