Google is by far the most sophisticated search engine which can also mean that you are going to be presented with millions of search results most of which aren't relevant. 

You can dramatically improve the quality of your search results using one of the many of what Google calls 'query operators' if you understand how to use them.

One 'power tool' that few people know about is the operator for "range" which will filter results in a given numerical range. 

Just by using two periods between two sets of numbers, Google knows to limit your search results to links within those parameters, which it does very well.

For instance, say you're doing a little research for a specific period in time you could type "Russian Revolution" 1800..1900 or when you're shopping for a used smartphone in specific price range, you can type "smartphones $250..$350". 

To further improve your results, try including specific formatting
