Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham nam de snippets" » "pham nhat de snippets", "pham van de snippets", "pham tai de snippets", "pham nam da snippets", "pham nam do snippets", "pham nam he 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 nam de 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 nam de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham nam de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham nam de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.