Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc pha du snippets" » "duc phan du snippets", "duc phap du snippets", "duc pham du snippets", "duc pham duc snippets", "duc pham duy snippets", "duc phan duc 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 pha du 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 pha du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc pha du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc pha du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.