Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha du ho snippets" » "pham duc ho snippets", "pham duy ho snippets", "phan duc ho snippets", "pha du hoc snippets", "pha du hoa snippets", "pha du ha 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: (((("pha du ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pha du ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha du ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha du ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.