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