Perhaps you should try some spelling variations:
"lang duc sio2 snippets" » "dang duc sio2 snippets", "lang du sio2 snippets", "lang suc sio2 snippets", "lang duc sinh snippets", "lang duc so snippets", "lang sic sio2 snippets", "lang duc 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: (((("lang duc 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: (((("lang duc sio2 snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lang duc sio2 snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lang duc sio2 snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.