Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cong dot snippets" » "nam cuong dot snippets", "nam dong dot snippets", "dam cong dot snippets", "nam cong mot snippets", "nam cong dong snippets", "nam cong doan 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 cong dot 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 cong dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cong dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cong dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.