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