Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cau de snippets" » "nam cao de snippets", "nam cac de snippets", "nam ca de snippets", "nam cau den snippets", "nam cau do snippets", "nam cuu de 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 cau de 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 cau de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cau de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cau de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.