Psychology

• Use technical or professional terms to get more technical or professional results. For example, when looking for disease statistics, use incidence rather than numbers or statistics (or maybe prevalence might be more relevant).
• Use (double) quotation marks to define phrases (multiple words found together, rather than separately) - use "clinical depression" to find the exact phrase rather then clinical depression without the quotation marks (which might find examples of depression in clinical laboratory workers).
• Add site:gov.au to restrict results to only government websites, or site:vic.gov.au for only Victorian government websites.

You can also:

• use site:vic.gov.au to restrict to Victorian government web sites.
• use a year range to look for years in the results, such as daterange:2012-2015
• specify the filetype of results (such as only PDF documents).

You can also use parentheses (round brackets) and OR for alternative terms (works best at the end of the search line):

We can also exclude a search term from our results (similar to using NOT in a database) by putting a hyphen or minus sign in front of the word (or phrase in quotes). For example, to exclude results that include the word asthma, we can use -asthma