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