Perhaps you should try some spelling variations:
"doi cay sio2 snippets" » "doi cao sio2 snippets", "doi bao sio2 snippets", "doi cay sinh snippets", "doi ca sio2 snippets", "doi day sio2 snippets", "voi cay sio2 snippets", "doi cay sio2 slippers"
"python using a snippets" » "python using a slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"doi cay sio2 snippets\") OR (\"python using a snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( doi cay sio2 snippets ) OR ( python using a snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi cay sio2 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets"))*.