Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam phong da snippets" » "hai phong da snippets", "van phong da snippets", "nam trong da snippets", "nam phong va snippets", "nam phong xa snippets", "nam phong la 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: (((("nam phong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam phong da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam phong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam phong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.