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