"Google" has become a verb (now we Google things, instead of just surfing the web), but not a lot of people know there are two basic kinds of searches.
Recall searching attempts to get as many results as possible, on the theory that something important might be left out with a more restrictive search.
Precision searching attempts to get results that most closely match what is being sought, even if some possibly useful results are left out.
Recall searching is easiest, but precision searching will help you get closer to the kinds of information you can really use. After all, you're not very likely to go beyond the first page or two of Google results, so you might as well narrow things down as much as possible!
Did you know you'll get better results if you don't use small, common words?
Because small words like 'the', 'a', and 'and' are so common, they will result in many, many more search results than could possibly be useful. Try leaving those words out. Instead of the boy and the girl looked in a shop, try boy girl looked shop. You'll probably get resutls that are closer to what you really want, and you'll have fewer results (maybe by the tens of millions!) to slog through.