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