Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nan cua le snippets" » "nhan cua le snippets", "ban cua le snippets", "nam cua le snippets", "nan cua te snippets", "nan cua he snippets", "nan cua ly 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: (((("nan cua le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nan cua le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nan cua le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nan cua le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.