This will return web pages that have links to PDF files, even if the pages themselves are not PDFs[2][3][5]. By using these operators effectively, you can significantly narrow down your search results ...
Google’s Search Liaison explained limitations in Google’s ability to return web pages from a prior date, also noting that date-based advanced search operators are still in beta. He provided one method ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results