Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cuu toan snippets" » "nam cuu hoan snippets", "nam cua toan snippets", "nam huu toan snippets", "nam suu toan snippets", "nam cau toan 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 cuu toan 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 cuu toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cuu toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cuu toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.