Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc ban con snippets" » "duc tan con snippets", "duc van con snippets", "dua ban con snippets", "duc ban cong snippets", "duc ban can snippets", "duc ban co snippets"
"locating bug code snippets" » "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: (((("duc ban con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc ban con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc ban con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc ban con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.