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