Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nam sach cua snippets" » "ngan sach cua snippets", "nam danh cua snippets", "nam sao cua snippets", "nam cach cua snippets", "nam mach cua snippets", "nam sac 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 sach 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 sach cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nam sach cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam sach cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.