Your government document will, of course, come from a .gov site, but a .gov site doesn't mean you've located a government document!
Your goal is to find a government document. This page will show you the difference.
This is a .gov website about less than lethal weapons:
https://nij.ojp.gov/topics/articles/police-use-force-impact-less-lethal-weapons-and-tactics
The whole search doesn't show in the text box, but the full search string is:
tasers (document or report) “U.S. Department” site:.gov filetype:pdf after:2015
| tasers | tells Google to search for the word "tasers" |
| (document OR report) | tells Google to search for the words "document" OR "report" -- you need the parentheses and the Boolean operator "OR" |
| "U.S. Department" | the quotation marks tell Google only to find instances of these characters appearing together. |
| site:.gov | tells Google to only search sites in the .GOV domain |
| filetype:pdf |
tells Google to only search for PDF files [Documents are most likely to be posted to the web as PDFs.] |
| after:2015 | tells Google to only return pages posted to the web after 2015 |
“less than lethal” (document or report) “U.S. Department” site:.gov filetype:pdf after:2015
Same search using "less than lethal" as the first item in the search string. Note: the quotation marks are required.
“Body armor” (document or report) “U.S. Department” site:.gov filetype:pdf after:2015
Similar search using "body armor"
https://www.ncjrs.gov/pdffiles1/nij/252033.pdf
“5g communication” (document or report) “U.S. Department” site:.gov filetype:pdf after:2015
(Polygraph or “lie detector”) (document or report) “U.S.Department” site:.gov filetype:pdf after:2015
“Crime mapping” (document or report) “U.S.Department” site:.gov filetype:pdf after:2015
