Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan giai son snippets" » "dan gian son snippets", "luan giai son snippets", "va giai son snippets", "dan giai san snippets", "dan giai doan snippets", "dan giang son 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 giai son 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 giai son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan giai son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan giai son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.