When you're looking for a specific type of file on Google (like PDFs), try limiting your search to receive results only in that file type. You can add the search term "filetype:PDF" in the searchbox or select the file type in the Advanced Search mode.
Other filetypes include PPT (PowerPoint), XLS (Excel files), RTF (Rich Text files), and DOC (Microsoft Word).
Other filetypes include PPT (PowerPoint), XLS (Excel files), RTF (Rich Text files), and DOC (Microsoft Word).