Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam cung cua snippets" » "nam cuong cua snippets", "nam vung cua snippets", "nam trung cua snippets", "nam chung cua snippets", "nam dung cua snippets", "nam cong cua 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 cung cua 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 cung cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam cung cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam cung cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.