Perhaps you should try some spelling variations:
"phan bao sio2 snippets" » "phan bo sio2 snippets", "phan ba sio2 snippets", "pham bao sio2 snippets", "phan cao sio2 snippets", "phan bao gio snippets", "phan bao sinh snippets", "phan bao 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"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phan bao sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan bao sio2 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan bao sio2 snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan bao sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.