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