Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam dong da snippets" » "lam dong da snippets", "nam trong da snippets", "nam phong da snippets", "nam dong dat snippets", "nam dong dao snippets", "nam dong 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: (((("nam dong 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 dong da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam dong da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam dong da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.