# | Finds popular hashtags for popular topics. |
* | Use an asterisk to represent unknown or wildcard terms. |
- |
If you include a dash before a search term or site, it subtracts pages with those terms from your results. |
" |
If you put a phrase or word in quotation marks, the results will only include pages with the words in quotation marks. |
info: |
Get information about a web address, including the cached version of the page, similar pages, and pages that link to the site. |
OR | Link synonyms with OR. Your results page will contain either term. |
related: | Find sites that are similar to a web address you already know. |
site: | Get results from certain sites or domains. |
For more information about search operators, visit Google's page: Search Operators.
For your project, you will probably want to steer clear of websites that end with .com.
Searching "primary sources" site:.edu instructs Google to return results that contain the exact phrase "primary source" only from sites that have the .edu domain name.