Perhaps you should try some spelling variations:
"cu uoc sio2 snippets" » "cu sic sio2 snippets", "cu soc sio2 snippets", "cua nuoc sio2 snippets", "cua quoc sio2 snippets", "cu uoc 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: (((("cu uoc 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: (((("cu uoc sio2 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cu uoc sio2 snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cu uoc sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.