Perhaps you should try some spelling variations:
"tho cua sio2 snippets" » "tho cua sinh snippets", "tho cao sio2 snippets", "tho cua so snippets", "thao cua sio2 snippets", "tho ca sio2 snippets", "tro cua sio2 snippets", "tho cua 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: (((("tho cua 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: (((("tho cua sio2 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tho cua sio2 snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tho cua sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.