Be Specific. Find pages within sites using site:[website URL] and your search phrase, find authors using author:[name], and type intitle:[word] to find a page with that word in the title.
Format. Use filetype:[jpg or other extension] to find images and all sorts of files (such as docs and pdfs)
Broaden Your Search. Use an asterisk (*) as a wildcard search operator to fill in the blanks. For example, "Why money is *"
Taking this further, you can also:
Find exams to practice with and other reference materials. Taking the "site:" operator a little further, you can search only education sites by typing in site:edu. This comes in handy when search for exams you can use to practice with: "site:edu advanced chemistry exam." Combine this with the "filetype:pdf" or "filetype:doc" format for additional exams and documents. You can find a list of Google search operators on this Google help page and even more advanced operators here, but there are also non-official filetypes, such as "hlp for help files and js for Javascript files" you can search for (which we know thanks to the NSA, oddly enough).
History/politics students (or anyone interested in government) should also remember they can search site:gov.
Find more research. Use the "related:" operator to find similar sites to broaden your research. For example, "related:www.lifehacker.com" or "related:www.nsa.gov" to make sure you're covering all your bases in your research.
Limit search results. Let's say your professor doesn't want you to use certain sources. Use the minus sign (-) operator to exclude results from a certain site (e.g., "encryption –site:Wikipedia.org"). You can also do this to refine the results when a word can mean more than one thing (e.g., "jaguar –car").
Similarly, if there's only a range of dates, measurements, or other numbers you want to find, use two periods (..) to set that range, e.g., "manufacturing 1990..2001" or "laptops ..$1000" (leave out one of the numbers to set a minimum or maximum).
Combine modifiers together. There are all sorts of powerful things you can do when you combine these search tricks. For example: "site:nytimes.com high school "test scores" –SAT2010..2014"
